background image

Monitor Unable to Operate Normally (All-in-one models)

Check...

Solution

When you turn on the computer, the screen does not 
show anything.

•  If the screen is black, check that:

The power cable or power adapter is connected to the 
computer and the other end is connected to a 
functioning electrical outlet.

The computer power is on.(Press the power button 
again to make sure.

•  If the above items are correct and the computer screen 

is still black, send it in for repairs.

When you turn on the computer, the screen is black and 
only displays the white cursor.

Use one-key recovery to restore the backup file to the 
Windows environment, or restore all the contents of the 
system partition (C partition) to the original factory state. If 
you still see only the cursor on the screen, send the 
computer in for repairs.

A black screen appears when the computer is on.

Check if a screensaver or power management has been 
enabled. Do one of the following to exit from the 
screensaver or recover from sleep or hibernation mode: 

•  Press any key on the keyboard.

•  Press the power button.

•  If the computer you purchased supports mode 

conversion, when the screen is turned on but a black 
screen appears, you can check the mode indicator. 
Check if the 

Monitor Mode 

indicator is on. If the light 

is on, indicating the system is in 

Monitor Mode

, press 

the mode selection button to switch from 

Monitor 

Mode 

to 

Computer Mode

.

Internal Components of System Unable to Operate Normally

FAX/MODEM Unable to Operate Normally

Check...

Solution

What modem cables and ports are used and confirm 
whether modem cables operate normally.

Use phone ports which can communicate normally and 
modem cables with fine circuit.

Whether the modem cable is connected with the 
computer Modem card appropriately.

Connect the lines by following the identification on the 
Modem card appropriately.

Whether the driver for the Modem card is installed 
correctly and set appropriately.

Install the driver for the Modemand set the Internet 
account and phone property correctly.

18

Qitian M445 / M640 / B445 User Manual V2.0 (E-version)

Summary of Contents for Qitian B445

Page 1: ...Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 2: ... January 2022 Copyright Lenovo 2022 ...

Page 3: ...rt Driver Installation 11 Chapter 3 Set Up Your Computer 13 Set Up Sleep Mode 13 Set Up BIOS Boot Order 13 Graphics Card Setup 13 Set Up NVIDIA Graphics Cards 13 Set Up AMD Graphics Cards 14 Chapter 4 Problem Diagnostics and Troubleshooting 17 Computer System Unable to Start up Normally 17 Internal Components of System Unable to Operate Normally 18 External Devices Unable to Operate Normally 20 Ha...

Page 4: ... other methods of communication Optical Mouse Usage Precautions An optical mouse functions by emitting a strong red light through its LED which is reflected by the desktop surface and enters the sensor The sensor senses micro texture changes in the desktop surface to calculate the direction and displacement of the mouse movement Therefore the reflective conditions of the desktop have a significant...

Page 5: ...rity of this product Furthermore Lenovo does not guarantee that it provides the drivers for other operating systems Operating systems and application software such as word processing and database software should come with their own instructions If you encounter any problems when using these programs please refer to the relevant instructions manual The functions of the preinstalled operating system...

Page 6: ... to a power as shown in the figure below 1 Connect the power cord to the corresponding connector on the back of the computer case 2 Plug the other end of the power cable into an electrical outlet Notes If your computer has a wireless keyboard and mouse connect them following the relevant instructions You must use the power adapter provided by Lenovo The use of another power adapter may cause combu...

Page 7: ...2 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 8: ...ect 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 connectors Gen 1 9 USB 3 2 connectors Gen 2 10 Internal speaker for selected models Copyright Lenovo 2022 3 ...

Page 9: ...card slot 4 Power button 5 Storage drive activity indicator 6 Microphone connector 7 Headset connector 8 USB C 3 2 connector Gen 1 9 USB 3 2 connectors Gen 1 10 USB 3 2 connectors Gen 2 11 Internal speaker for selected models 4 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 10: ...ivity indicator 3 SD card slot 4 Power button 5 Storage drive activity indicator 6 Microphone connector 7 Headset connector 8 USB 3 2 connectors Gen 1 9 USB 3 2 connectors Gen 2 10 Internal speaker for selected models Chapter 2 How to Use Your Computer 5 ...

Page 11: ...0 connector with smart power on 7 Power cord connector 8 Audio line out connector 9 Audio line in connector 10 Smart cable clip slots 11 Serial connector 12 PS 2 mouse connector 13 Ethernet connector 14 Serial connector 15 PCI Express card area 16 Security lock slot for selected models 6 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 12: ... Gen 1 with smart power on 7 Power cord connector 8 Audio line out connector 9 Audio line in connector 10 Smart cable clip slots 11 PS 2 mouse connector 12 PS 2 keyboard connector 13 Serial connector 14 Ethernet connector 15 Serial connector 16 PCI Express card area 17 Security lock slot for selected models Chapter 2 How to Use Your Computer 7 ...

Page 13: ...tor 8 Audio line out connector 9 Audio line in connector 10 Smart cable clip slots 11 Serial connector 12 PS 2 mouse connector 13 Ethernet connector 14 Serial connector 15 PCI Express card area 16 Security lock slot for selected models Start Up the Computer Press and hold the power button on the case to start up the computer 8 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 14: ... hardware faults Connect to Wi Fi Networks Note If the computer you purchased is not a Wi Fi device please skip this section A Wi Fi connection provides mobile Internet access within the coverage area of the Wi Fi signal This method allows you to connect to the Internet wirelessly Wi Fi LAN networks cover a small area such as a house office or a campus with several buildings You must connect to an...

Page 15: ...e ExpressCard device 1 Push the ExpressCard device until you hear a click 2 Gently remove the ExpressCard device from the ExpressCard slot Notes Before removing the ExpressCard disable it in Safely Remove Hardware and the Eject Media Tool pop up When not using the ExpressCard slot insert the dust protection card to prevent the ingress of dust and other small objects Retain the dust protection card...

Page 16: ...l the drivers in the set sequence To ensure the stability of your computer during the installation process the smart installation system will restart the computer when its operating status permits Selective installation In the hardware information dialog box provided by the smart installation system you can manually install drivers one by one or install only the selected drivers Notes The smart dr...

Page 17: ...12 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 18: ...ard Setup Notes This section only applies to graphics cards with a multi display output function If the computer you purchased does not come with a graphics card that supports this function you can skip this section This section only introduces some common graphics card functions For information about other functions see the electronic help information that comes with the graphics card driver If y...

Page 19: ...mes with an HDMI connector it supports devices with HDMI audio output Before setup connect the HDMI display that supports audio output Input Control Panel in the search box and press Enter In the control panel window go to Hardware and Sound Sound to open the Sound interface In the Playback tab right click the HDMI device to test it and set up HDMI device audio output Other Precautions The BIOS of...

Page 20: ...ter 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 Your Computer 15 ...

Page 21: ...16 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 22: ...be turned on immediately after it is moved into from outdoor environment with large difference of temperature The computer should be placed in the normal temperature for more than 2 hours Monitor Does Not Work Normally traditional desktop or minicomputer Check Solution Whether the power switch of the monitor is pressed Press the power switch of the monitor Whether the power cords of the computer a...

Page 23: ...wing to exit from the screensaver or recover from sleep or hibernation mode Press any key on the keyboard Press the power button If the computer you purchased supports mode conversion when the screen is turned on but a black screen appears you can check the mode indicator Check if the Monitor Mode indicator is on If the light is on indicating the system is in Monitor Mode press the mode selection ...

Page 24: ...programs are opened It may cause discontinuous audio or video if too many programs are opened for the computer has to process several tasks at the same time Close other programs or restart the computer and retry it The setting of transmission mode for the optical drive Follow the steps below if the setting of optical drive is changed 1 Open the Device Manager 2 Click the sign in front of the IDE A...

Page 25: ...ure the desktop and the mouse pad is flat and clean for the mouse Try to replace the desktop or mouse pad of the optical mouse for their effect will vary by factors such as material and color of the desktop or mouse pad glass or other medium with special colors may lead to mouse malfunction Devices Connected to System Serial Parallel Connectors Unable to Operate Normally Check Solution Whether the...

Page 26: ...arts from the desired device Also make sure that the device from which the computer starts is on In the Boot menu of the BIOS Setup Utility make sure the desired device is included in the Boot Device Priority list The connected external device does not work Do not connect or disconnect devices to non USB ports when the computer is turned on as this may damage the computer When using a high power e...

Page 27: ...22 Qitian M445 M640 B445 User Manual V2 0 E version ...

Page 28: ...o Instructions manual Quick reference You can find help information and functional descriptions for different components in the instructions manual https www lenovo com cn Company website information Go to https www lenovo com cn and complete one time registration using the factory code case serial number to verify your user ID We invite you to frequently check the service support page on the Leno...

Page 29: ...Series or Qitian Models Call the customer service hotline or log in to the Lenovo company website and look up the relevant service policies for your product Major customer service hotline 400 810 6666 In areas where 400 calls are not available please call 010 58859506 Lenovo company website https www lenovo com cn Lenovo service website https newsupport lenovo com cn Correspondence address 1st Flo...

Page 30: ...rdware product but not the Software Product s covered under this Agreement Software Product includes Lenovo computer software programs whether preinstalled or provided separately and related licensed materials such as documentation You and Your refer either to an individual person or to a single legal entity 1 Entitlement You must maintain Your original dated sales transaction document such as a r...

Page 31: ...alled or included with and may be transferred only with that Lenovo hardware product They may not be transferred independent of the Lenovo hardware product 4 Third Party Software Components and Products Some Lenovo Software Products and future updates and patches may contain third party components which may include Microsoft Windows Preinstallation Environment These third party components are prov...

Page 32: ...u up to the amount You paid for the Software Product This limit does not apply to damages for bodily injury including death and damage to real property and tangible personal property for which Lenovo is required by law to be liable This limit also applies to Lenovo s suppliers and resellers It is the maximum for which Lenovo its suppliers and resellers are collectively responsible UNDER NO CIRCUMS...

Page 33: ...he microprocessor and device such as the video drive and network etc USB Universal Serial Bus Used for connectors of devices such as keyboard mouse removable storage or printers it enables devices to insert into the 4 pin connector on the computer directly The USB supports hot plug PS 2 A type of small DIN connector on computer which is usually used to connect the keyboard or mouse BIOS Basic Inpu...

Page 34: ...all other computers on the Internet When the data is sent or received on the Internet sender or receiver address is included in the data CMOS It is the Complementary Metal Oxide Semiconductorand the storage chips commonly used in NVRAM storage COM Port It usually refers to the serial port connection with Modem or other serial devices Most computers support one or two serial ports specified as COM1...

Page 35: ...osoft group of companies The terms HDMI and HDMI High Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries USB C is a registered trademark of USB Implementers Forum All other trademarks are the property of their respective owners 30 Qitian M445 M640 B445 User Manual V2 0 E version ...

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