Lenovo ThinkCentre M75s Gen 2 User manual

M75s Gen 2
User Guide

Read this first
Before using this documentation and the product it supports, ensure that you read and understand the
following:
• Appendi A “Important safety information” on page 59
• Safety and Warranty Guide
• Setup Guide
First Edition (November 2020)
© Copyright Lenovo 2020.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-
35F-05925.

Contents
Abo t this doc mentation . . . . . . . . iii
Chapter 1. Meet yo r comp ter . . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Rear . . . . . . . . . . . . . . . . . . . . 3
Features and specifications . . . . . . . . . . . 5
Statement on USB transfer rate . . . . . . . . 6
Chapter 2. Get started with yo r
comp ter . . . . . . . . . . . . . . . . . 7
Get started with Windows 10 . . . . . . . . . . 7
Windows account . . . . . . . . . . . . . 7
Windows user interface . . . . . . . . . . . 8
Connect to networks . . . . . . . . . . . . . . 9
Connect to the wired Ethernet . . . . . . . . 9
Connect to Wi-Fi networks (for selected
models) . . . . . . . . . . . . . . . . . 9
Use the Vantage app . . . . . . . . . . . . . . 9
Use multimedia . . . . . . . . . . . . . . . 10
Use audio . . . . . . . . . . . . . . . 10
Connect an e ternal display . . . . . . . . 10
Chapter 3. Explore yo r comp ter . . 11
Manage power . . . . . . . . . . . . . . . 11
Set power button behaviors . . . . . . . . 11
Set the power plan . . . . . . . . . . . . 11
Transfer data . . . . . . . . . . . . . . . . 11
Connect to a Bluetooth-enabled device (for
selected models) . . . . . . . . . . . . 11
Use the optical drive (for selected models) . . 12
Use a media card (for selected models) . . . . 12
Use a smart cable clip (for selected models). . . . 12
Purchase accessories . . . . . . . . . . . . 13
Chapter 4. Sec re yo r comp ter
and information . . . . . . . . . . . . 15
Lock the computer . . . . . . . . . . . . . 15
Log in to your computer securely . . . . . . . . 16
Use passwords . . . . . . . . . . . . . 16
Use software security solutions. . . . . . . . . 17
Use firewalls . . . . . . . . . . . . . . 17
Use computrace Agent software embedded in
firmware (for selected models) . . . . . . . 18
Use BIOS security solutions . . . . . . . . . . 18
Erase all storage drive data . . . . . . . . 18
Use the cover presence switch . . . . . . . 18
Use Smart USB Protection. . . . . . . . . 19
Chapter 5. UEFI BIOS . . . . . . . . . 21
What is UEFI BIOS. . . . . . . . . . . . . . 21
Enter the BIOS menu. . . . . . . . . . . . . 21
Navigate in the BIOS interface . . . . . . . . . 21
Change the display language of UEFI BIOS . . . . 21
Change the display mode of UEFI BIOS . . . . . 22
Set the system date and time . . . . . . . . . 22
Change the startup sequence . . . . . . . . . 22
Enable or disable the configuration change
detection feature . . . . . . . . . . . . . . 23
Enable or disable the automatic power-on
feature . . . . . . . . . . . . . . . . . . 23
Enable or disable the smart power-on feature . . . 23
Enable or disable the ErP LPS compliance mode . . 23
Change the ITS performance mode . . . . . . . 24
Change BIOS settings before installing a new
operating system . . . . . . . . . . . . . . 24
Update UEFI BIOS. . . . . . . . . . . . . . 25
Recover from a BIOS update failure . . . . . . . 25
Clear CMOS . . . . . . . . . . . . . . . . 25
Chapter 6. Tro bleshooting,
diagnostics, and recovery . . . . . . . 27
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 27
Troubleshooting . . . . . . . . . . . . . . 27
Startup problems . . . . . . . . . . . . 27
Audio problems . . . . . . . . . . . . . 28
Network problems . . . . . . . . . . . . 28
Performance problems . . . . . . . . . . 31
Storage drive problems . . . . . . . . . . 32
CD or DVD problems . . . . . . . . . . . 32
Serial connector problems . . . . . . . . . 33
USB device problems . . . . . . . . . . 33
Software problems. . . . . . . . . . . . 34
Diagnostics . . . . . . . . . . . . . . . . 34
Lenovo diagnostic tools . . . . . . . . . . 34
Recovery . . . . . . . . . . . . . . . . . 34
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 34
Restore your files from a backup . . . . . . 34
Reset your computer . . . . . . . . . . . 34
Use advanced options . . . . . . . . . . 35
Windows automatic recovery. . . . . . . . 35
Create and use a recovery USB device . . . . 35
Update the device driver . . . . . . . . . 36
Chapter 7. CRU replacement . . . . . 37
© Copyright Lenovo 2020 i

What are CRUs . . . . . . . . . . . . . . . 37
Replace a CRU . . . . . . . . . . . . . . . 38
Vertical stand . . . . . . . . . . . . . . 38
Computer cover . . . . . . . . . . . . . 38
Front bezel . . . . . . . . . . . . . . . 39
Optical drive . . . . . . . . . . . . . . 40
Drive bay assembly . . . . . . . . . . . 42
Hard disk drive . . . . . . . . . . . . . 43
M.2 solid-state drive and heat sink . . . . . 46
M.2 solid-state drive bracket . . . . . . . . 49
Memory module . . . . . . . . . . . . . 49
PCI-E press card . . . . . . . . . . . . 51
Coin-cell battery. . . . . . . . . . . . . 51
Power supply assembly . . . . . . . . . . 52
E-lock . . . . . . . . . . . . . . . . . 53
Chapter 8. Help and s pport . . . . . 55
Self-help resources . . . . . . . . . . . . . 55
Call Lenovo . . . . . . . . . . . . . . . . 56
Before you contact Lenovo . . . . . . . . 56
Lenovo Customer Support Center . . . . . . 56
Purchase additional services. . . . . . . . . . 57
Appendix A. Important safety
information . . . . . . . . . . . . . . . 59
Appendix B. Accessibility and
ergonomic information . . . . . . . . 73
Appendix C. S pplemental
information abo t the Ub nt operating
system . . . . . . . . . . . . . . . . . 77
Appendix D. Compliance and TCO
Certified information . . . . . . . . . . 79
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 91
ii M75s Gen 2 User Guide

Abo t this doc mentation
• Illustrations in this documentation might look different from your product.
• Depending on the model, some optional accessories, features, and software programs might not be
available on your computer.
• Depending on the version of operating systems and programs, some user interface instructions might not
be applicable to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to:
https://pcsupport.lenovo.com
• Microsoft® makes periodic feature changes to the Windows® operating system through Windows Update.
As a result, some information in this documentation might become outdated. Refer to Microsoft resources
for the latest information.
© Copyright Lenovo 2020 iii

iv M75s Gen 2 User Guide

Chapter 1. Meet yo r comp ter
Front
1. Optical drive eject button* Eject the optical drive tray.
2. Optical drive activity indicator* This indicator is on when the optical drive is in use.
3. SD-card slot*
Supported cards:
• Secure Digital (SD) card
• Secure Digital eXtended-Capacity (SDXC) UHS-1 card
• Secure Digital High-Capacity (SDHC) UHS-1 card
Note: Your computer does not support the content protection for recordable
media (CPRM) feature for the SD card.
See “Use a media card (for selected models)” on page 12.
4. Power button
Press to turn on the computer.
To turn off the computer, open the Start menu, click Power, and then select
Sh t down.
The indicator in the power button shows the system status of your computer.
• On: The computer is on.
• Off: The computer is off or in hibernation mode.
• Blinking: The computer is in sleep mode.
5. Storage drive activity indicator This indicator is on when the storage drive is in use.
© Copyright Lenovo 2020 1

6. ThinkCentre® LED This indicator is on when the computer is on.
7. Microphone connector Connect a microphone.
8. Headset connector Connect a headset or headphones to your computer.
9. USB-C™ (3.2 Gen 1) connector
• Charge USB-C compatible devices with the output voltage and current of 5 V
and 3 A.
• Transfer data at USB 3.2 speed, up to 5 Gbps.
• Connect to USB-C accessories to help e pand your computer functionality. To
purchase USB-C accessories, go to https://www.lenovo.com/accessories.
10. USB 3.2 connectors Gen 1 Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
11. USB 3.2 connectors Gen 2
Enable you to e perience higher data transfer rate when you connect USB-
compatible devices, such as a USB keyboard, USB mouse, USB storage device,
or USB printer.
12. Internal speaker* Enable you to e perience high-quality sound.
* for selected models
2M75s Gen 2 User Guide

Rear
1. Audio line-out connector
Send audio signals from the computer to e ternal devices, such as powered
stereo speakers, headphones, or multimedia keyboards. To connect a stereo
system or other e ternal recording device, connect a cable between the audio
line-in connector of the device and the audio line-out connector of the computer.
Note: If your computer has both an audio line-out connector and a headset or
headphone connector, always use the headset or headphone connector for
earphones, headphones, or a headset. The headphone connector does not
support headset microphones.
2. DisplayPort® out connectors Send audio and video signals from the computer to another audio or video device,
such as a high-performance monitor.
3. HDMI™ out connector Send audio and video signals from the computer to another audio or video device,
such as a high-performance monitor.
4. USB 2.0 connectors Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
5. USB 2.0 connector
Connect USB-compatible devices, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
Note: This connector supports the smart power-on feature. For more information,
see “Enable or disable the smart power-on feature” on page 23.
6. Security-lock slot Lock your computer to a desk, table, or other fi tures through a Kensington-style
cable lock.
7. Serial connector Connect an e ternal modem, a serial printer, or other devices that use a serial
connector.
Chapter 1.Meet your computer 3

8. Ethernet connector
Connect to a local area network (LAN). When the green indicator is on, the
computer is connected to a LAN. When the yellow indicator blinks, data is being
transmitted.
9. Padlock loop Lock the computer cover through a padlock.
10. E-lock slots Lock the computer cover through an E-lock.
11. PCI-E press card area
Install PCI-E press cards into this area to improve the operating performance of
the computer. Depending on the computer model, the connectors in this area
vary.
12. Power cord connector Connect the power cord to your computer for power supply.
4M75s Gen 2 User Guide

Feat res and specifications
Dimensions
• Width: 92.5 mm (3.6 inches)
• Height: 339.5 mm (13.4 inches)
• Depth: 297.7 mm (11.7 inches)
Weight (witho t the package) Ma imum configuration as shipped: 5.3 kg (11.7 lb)
Hardware config ration
1. Right-click the Start button to open the Start conte t menu.
2. Click Device Manager. Type the administrator password or provide
confirmation if prompted.
Power s pply
• 180-watt automatic voltage-sensing power supply
• 260-watt automatic voltage-sensing power supply
• 310-watt automatic voltage-sensing power supply
Electrical inp t • Input voltage: From 100 V ac to 240 V ac
• Input frequency: 50/60 Hz
Microprocessor To view the microprocessor information of your computer, right-click the Start
button and then click System.
Memory
• Up to four double data rate 4 (DDR4) unbuffered dual inline memory modules
(UDIMMs)
• The ma imum capacity of memory: 128GB
Storage device
• 2.5-inch hard disk drive*
• 3.5-inch hard disk drive*
• M.2 solid-state drive*
To view the storage drive capacity of your computer, right-click the Start button
to open the Start conte t menu and then click Disk Management.
Note: The storage drive capacity indicated by the system is less than the nominal
capacity.
Video feat res
• The integrated graphics card supports the following:
– DisplayPort out connectors
– HDMI out connector
• The optional discrete graphics card provides an enhanced video e perience
and e tended capabilities.
A dio feat res
The integrated audio card supports the following:
• Audio line-out connector
• Headset connector
• Internal speaker*
• Microphone connector
Chapter 1.Meet your computer 5

Expansion
• Card reader*
• Memory slots
• M.2 solid-state drive slot
• Optical drive*
• PCI-E press card slots
• Storage drive bay
Network feat res
• Bluetooth*
• Ethernet LAN
• Wireless LAN*
* for selected models
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB device Data rate (Gbit/s)
3.2 Gen 1 / 3.1 Gen 1 5
3.2 Gen 2 / 3.1 Gen 2 10
3.2 Gen 2 × 2 20
6M75s Gen 2 User Guide

Chapter 2. Get started with yo r comp ter
Get started with Windows 10
Learn the basics of Windows 10 and start working with it right away. For more information about Windows
10, see the Windows help information.
Windows acco nt
A user account is required to use the Windows operating system. It can either be a Windows user account or
a Microsoft account.
Windows ser acco nt
When you start Windows for the first time, you are prompted to create a Windows user account. This first
account you created is of the “Administrator” type. With an Administrator account, you can create additional
user accounts or change account types by doing the following:
1. Open the Start menu and select Settings ➙ Acco nts ➙ Family & other sers.
2. Follow the on-screen instructions.
Microsoft acco nt
You can also log in to the Windows operating system with a Microsoft account.
To create a Microsoft account, go to the Microsoft sign-up page at https://signup.live.com and follow the on-
screen instructions.
With a Microsoft account, you can:
• Enjoy one-time signing in if you are using other Microsoft services, such as OneDrive, Skype, and Outlook.
com.
• Sync personalized settings across other Windows-based devices.
© Copyright Lenovo 2020 7

Windows ser interface
1. Acco nt Change account settings, lock the computer, or sign out from the current account.
2. Doc ments Open the Doc ments folder, a default folder to save your received files.
3. Pict res Open the Pict res folder, a default folder to save your received pictures.
4. Settings Launch Settings.
5. Power Shut down, restart, or put the computer into sleep mode.
6. Start b tton Open the Start menu.
7. Windows Search Type what you are looking for in the search bo and get search results from your
computer and the Web.
8. Task View Display all opened apps and switch among them.
9. Windows notification area Display notifications and status of some features.
10. Battery stat s icon Display power status and change battery or power settings. When your computer
is not connected to ac power, the icon changes to .
11. Network icon Connect to an available wireless network and display the network status. When
connected to a wired network, the icon changes to .
12. Action center Display the latest notifications from apps and provide quick access to some
features.
Open the Start men
• Click the Start button.
• Press the Windows logo key on the keyboard.
Open the Start context men
Right-click the Start button.
8M75s Gen 2 User Guide

Access Control Panel
• Open the Start menu and click Windows System ➙ Control Panel.
• Use Windows Search.
La nch an app
• Open the Start menu and select the app you want to launch.
• Use Windows Search.
Connect to networks
Your computer helps you connect to the world through a wired or wireless network.
Connect to the wired Ethernet
Connect your computer to a local network through the Ethernet connector on your computer with an
Ethernet cable.
Connect to Wi-Fi networks (for selected models)
If your computer includes a wireless LAN module, you can connect your computer to Wi-Fi® networks. The
wireless LAN module on your computer may support different standards. For some countries or regions, use
of 802.11a may be disabled according to local regulations.
1. Click the network icon in the Windows notification area. A list of available wireless networks is displayed.
2. Select a network available for connection. Provide required information, if needed.
Use the Vantage app
The preinstalled Vantage app is a customized one-stop solution to help you maintain your computer with
automated updates and fi es, configure hardware settings, and get personalized support.
To access the Vantage app, type Vantage in the search bo .
Key feat res
The Vantage app enables you to:
• Know the device status easily and customize device settings.
• Download and install UEFI BIOS, firmware and driver updates to keep your computer up-to-date.
• Monitor your computer health, and secure your computer against outside threats.
• Scan your computer hardware and diagnose hardware problems.
• Look up warranty status (online).
• Access User Guide and helpful articles.
Notes:
• The available features vary depending on the computer model.
• The Vantage app makes periodic updates of the features to keep improving your e perience with your
computer. The description of features might be different from that on your actual user interface.
Chapter 2.Get started with your computer 9

Use m ltimedia
Use your computer for business or entertainment with the devices (such as a camera, a monitor, or
speakers).
Use a dio
To enhance the audio e perience, connect speakers, headphones, or a headset to the audio connector.
Adj st the vol me
1. Click the volume icon in the Windows notification area on the taskbar.
2. Follow the on-screen instructions to adjust the volume. Click the speaker icon to mute the audio.
Change the so nd settings
1. Go to Control Panel and view by category.
2. Click Hardware and So nd ➙ So nd.
3. Change the settings as you prefer.
Connect an external display
Connect a projector or a monitor to your computer to give presentations or e pand your workspace.
Connect a wireless display
Ensure that both your computer and the wireless display support Miracast®.
Press + and then select a wireless display to connect.
Change display settings
Right-click a blank area on the desktop and select Display settings. Then, you can change display settings
as you prefer.
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Chapter 3. Explore yo r comp ter
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
Set power b tton behaviors
You can define what the power button does according to your preference. For e ample, by pressing the
power button, you can turn off the computer or put the computer to sleep or hibernation mode.
To change what the power button does:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options ➙ Choose what the power b ttons do.
3. Change the settings as you prefer.
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have
been idle for a specified duration:
Table 1. Default power plan (when plugged into ac power)
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 25 minutes
To awaken the computer from Sleep mode, press any key on your keyboard.
To reset the power plan to achieve the best balance between performance and power saving:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options, and then choose or customize a power plan of your preference.
Transfer data
Quickly share your files using the built-in Bluetooth technology among devices with the same features. You
also can install a disc or media card to transfer data.
Connect to a Bl etooth-enabled device (for selected models)
You can connect all types of Bluetooth-enabled devices to your computer, such as a keyboard, a mouse, a
smartphone, or speakers. To ensure that the connection is successful, place the devices 10 meters (33 feet),
at most, from the computer.
1. Turn on Bluetooth on the computer.
a. Open the Start menu, and then click Settings ➙ Devices ➙ Bl etooth & other devices.
b. Turn on the Bl etooth switch.
2. Click Add Bl etooth or other device ➙ Bl etooth.
3. Select a Bluetooth device, and then follow the on-screen instructions.
© Copyright Lenovo 2020 11

Your Bluetooth device and computer will automatically connect the ne t time if the two devices are in range
of each other with Bluetooth turned on. You can use Bluetooth for data transfer or remote control and
communication.
Use the optical drive (for selected models)
If your computer has an optical drive, read the following information.
Know the type of yo r optical drive
1. Right-click the Start button to open the Start conte t menu.
2. Click Device Manager. Type the administrator password or provide confirmation, if prompted.
Install or remove a disc
1. With the computer on, press the eject button on the optical drive. The tray slides out of the drive.
2. Insert a disc into the tray or remove a disc from the tray, and then push the tray back into the drive.
Note: If the tray does not slide out of the drive when you press the eject button, turn off the computer. Then,
insert a straightened paper clip into the emergency-eject hole adjacent to the eject button. Use the
emergency eject only in an emergency.
Record a disc
1. Insert a recordable disc into the optical drive that supports recording.
2. Do one of the following:
• Open the Start menu, and then click Settings ➙ Devices ➙ A toPlay. Select or turn on Use
A toPlay for all media and devices.
• Open Windows Media Player.
• Double-click the ISO file.
3. Follow the on-screen instructions.
Use a media card (for selected models)
If your computer has a SD-card slot, read the following information.
Install a media card
1. Locate the SD-card slot.
2. Ensure that the metal contacts on the card are facing the ones in the SD-card slot. Insert the card firmly
into the SD-card slot until it is secured in place.
Remove a media card
Attention: Before removing a media card, eject the card from the Windows operating system first.
Otherwise, data on the card might get corrupted or lost.
1. Click the triangular icon in the Windows notification area to show hidden icons. Then, right-click the
Safely Remove Hardware and Eject Media icon.
2. Select the corresponding item to eject the card from the Windows operating system.
3. Press the card and remove it from your computer. Store the card safely for future use.
Use a smart cable clip (for selected models)
Note: You can purchase a smart cable clip from Lenovo.
12 M75s Gen 2 User Guide

Lock devices (such as the keyboard and the mouse) to your computer through a smart cable clip.
1. Insert the clip 1 into the cable-lock slot a.
2. Pull the cables you want to lock through the dents in the smart cable clip.
3. Press the clip 2 into the cable-lock slot b until it snaps into position.
P rchase accessories
Lenovo has a number of hardware accessories and upgrades to help e pand the capabilities of your
computer. Options include memory modules, storage devices, network cards, power adapters, keyboards,
mice, and more.
To shop at Lenovo, go to https://www.lenovo.com/accessories.
Chapter 3.E plore your computer 13

14 M75s Gen 2 User Guide