Lenovo Qitian M445_ M640_ B445 User Manual V2.0
Summary
This comprehensive user manual provides essential guidance for setting up and operating your Qitian desktop computer. It covers everything from initial BIOS configuration and connecting external devices like Bluetooth/Wi-Fi, to usage precautions for graphics cards and optical mice. Designed for new users, this guide walks you through proper system setup, routine operation best practices, and effective troubleshooting steps if hardware or connectivity issues arise.
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
Page Summary Contents For Lenovo Qitian M445_ M640_ B445 User Manual V2.0
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
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(January 2022) © Copyright Lenovo 2022.
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Contents Important Information Before Use. . . . iii Set Up BIOS Boot Order . . . . . . . . . . . 13 Computer Usage Precautions . . . . . . . . . . iii Graphics Card Setup. . . . . . . . . . . . . 13 ...
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Important Information Before Use This guide aims to help you use this product correctly. Before installing and using this product for the first time, please be sure to carefully read all the materials...
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• Use a mousepad designed for an optical mouse. Storage Media and Driver Usage Precautions 1. If your computer comes with an optical drive, do not touch the surface of the disc or the lens on the tray...
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Chapter 1. Install the Computer Notes: • Before installing the computer, check the packing list to make sure all the parts are provided. • Before installing and using the computer, carefully read this...
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
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Chapter 2. How to Use Your Computer Front View 1. Optical drive eject button* 2. Optical drive activity indicator* 3. SD card slot* 4. Power button 5. Storage drive activity indicator 6. Microphone co...
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1. Optical drive eject button* 2. Optical drive activity indicator* 3. SD card slot* 4. Power button 5. Storage drive activity indicator 6. Microphone connector 7. Headset connector 8. USB-C® 3.2 conn...
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1. Optical drive eject button* 2. Optical drive activity indicator* 3. SD card slot* 4. Power button 5. Storage drive activity indicator 6. Microphone connector 7. Headset connector 8. USB 3.2 connect...
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Rear View 1. Microphone connector 2. HDMITM out connector 3. VGA out connector 4. PS/2 keyboard connector* 5. USB 2.0 connectors 6. USB 2.0 connector (with smart power on) 7. Power cord connector 8. A...
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1. Microphone connector 2. Display Port® out connector 3. HDMI-out connector 4. VGA out connector 5. USB 3.2 connectors Gen 1 6. USB 3.2 connector Gen 1 (with smart power-on) 7. Power cord connector 8...
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1. Microphone connector 2. HDMI-out connector 3. VGA out connector 4. PS/2 keyboard connector* 5. USB 2.0 connectors 6. USB 2.0 connector (with smart power on) 7. Power cord connector 8. Audio line-ou...
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Shut Down the Computer To prevent damage to hardware/software systems or loss of data, do not arbitrarily use the power button to shut down the computer. Instead, shut down the computer as follows. 1....
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If your computer is equipped with a Bluetooth adapter card, you can connect it to other Bluetooth devices, such as laptops, PDAs, and mobile phones, to transmit data wirelessly. In an open space, Blue...
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Smart Driver Installation In order to let you quickly, conveniently, and correctly install drivers for the components in your computer, we designed an exclusive smart driver installation system. By us...
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
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Chapter 3. Set Up Your Computer Set Up Sleep Mode Note: The interface images in this chapter are for reference only. 1. In the search box, enter power supply and then press Enter. 2. In the pop-up box...
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Before setup, connect the two displays for output. Input Display Settings in the search box and press Enter to go to the Display interface. Set the multiple display mode as needed. In the drop-down me...
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• After you install the graphics card driver and restart the computer, an ASP.NET Machine A... user may appear. This does not affect system use, and you can delete the user manually. Chapter 3. Set Up...
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
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Chapter 4. Problem Diagnostics and Troubleshooting Computer System Unable to Start-up Normally Computer System Unable to Operate Normally Check... Solution Whether the power cord or the Adapter of the...
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Monitor Unable to Operate Normally (All-in-one models) Check... Solution When you turn on the computer, the screen does not • If the screen is black, check that: show anything. The power cable or powe...
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No Audio Output or Single Track after Audio Card is Installed Check... Solution Whether the connectors of the speaker or microphone are Connect the input connector of the speaker with the connected ap...
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External Devices Unable to Operate Normally Keyboard Unable to Operate Normally Check... Solution Whether the keyboard cable is connected appropriately Plug the keyboard cable into the keyboard connec...
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Check... Solution Whether the options related to the hard disk drive in BIOS Reset the information of the hard disk in BIOS setup are correct. appropriately. Whether the hard disk is damaged physicall...
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Qitian M445 / M640 / B445 User Manual V2.0 (E-version)
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Chapter 5. Obtain Product Information and Help This chapter provides an index of information resources related to Lenovo products. If you need help, services, tech support, or detailed information on ...
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• Ownership of replaced machine and parts: After Lenovo, a Lenovo products dealer, or authorized Lenovo service provider replaces your product or a faulty part, the original machine or part will becom...
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Chapter 6. Additional Information Lenovo License Agreement This Lenovo License Agreement (the “Agreement”) applies to each Lenovo Software Product that You acquire, whether it is preinstalled on or in...
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You will ensure that anyone who uses the Software Product (accessed either locally or remotely) does so only for Your authorized use and complies with the terms of this Agreement. You may not a) use, ...
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If any authority imposes a duty, tax, levy or fee, excluding those based on Lenovo’s net income, upon the Software Product, then You agree to pay the amount specified or supply exemption documentation...
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12. Dispute Resolution If You acquired the Software Product in Cambodia, Indonesia, Philippines, Vietnam or Sri Lanka, disputes arising out of or in connection with this Software Product shall be fina...
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Term Definition KB Kilobyte. It is the measurement unit of data (1 KB is equal to 1,024 bytes). 1024 KB is equal to 1 MB. KHz Kilohertz. It is the measurement unit of frequency (1 KHz is equal to 1,00...
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Mini Display Port (m DP) and Display Port are Trademarks of the Video Electronics Standards Association. Microsoft, Windows, and Windows Media are trademarks of the Microsoft group of companies. The t...
Manual Details
| Brand | Lenovo |
|---|---|
| Pages | 35 |
| File Size | 11.14 MB |
| Published | June 03, 2026 |
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Frequently Asked Questions
Should I cover the heat dissipation vents while using the computer?
No, do not use dust shields or cloths to cover the heat dissipation vents on the top of the product when it is running, as this can cause hardware damage.
What surfaces degrade the performance of an optical mouse?
Glass table tops, mirrors, overly shiny metal, and surfaces with uniform patterns (like marble) are poor for optical mouse performance.
Will my wireless card work if I have an outdated router?
It might be incompatible, which can cause connection issues. You should contact your router manufacturer to request a firmware update.