Because there are various reasons for the computer's black screen, it is necessary to have an optimal detection order and conduct a comprehensive and systematic analysis, and we must not let go of any one of the reasons that may lead to the black screen. Simply put, in fact, the black screen is nothing more than hardware and software. We'd better check it from hardware to software. The inspection method is as follows: 1. In terms of hardware, before confirming whether the monitor is damaged, try to change a monitor that is confirmed to be normal. If the screen is no longer black, then the reason is that the monitor may be damaged. Secondly, check whether the computer parts are firmly inserted. After confirming that the monitor is normal, please check whether the monitor cable is firmly inserted into the host interface, and then check whether the contact between the graphics card and the I/O slot of the motherboard is good. If necessary, please take out the video card and insert it again to ensure that it is in place and in good contact. Third, confirm whether there is a problem with the fan. If the monitor is not damaged, please further check whether the CPU fan is running. When working, you can use a multimeter to measure whether the voltage outputs of 12V and 15V are normal. If it is not normal, please try another power supply.
4. If the CPU, graphics card, and memory stick still have a black screen, you can use the "replacement method". The method is to replace all CPU, graphics card and memory chips with those that are believed to be normal, and then turn them on. If there is something wrong with the memory, you should call the police. If it's not a memory problem, switch to a normal CPU and restart. If there is still a black screen, you can only change a motherboard, and the problem should also appear on the motherboard, so repeatedly eliminate it until you find the cause of the failure! In addition to hardware reasons, there are three "soft" reasons that may cause "black screen". Software: 1. The hardware acceleration setting is too high. Hardware acceleration can make the software dealing with a large number of graphics run more smoothly, but if the computer hardware acceleration setting is too high, it may lead to "black screen" phenomenon. To solve the "black screen" fault, please try to reduce the hardware acceleration first. 1. Click the Windows Start menu, click Control Panel, and then double-click Display. 2. Select the Troubleshooting tab, and under Hardware Acceleration, gradually drag the slider from "All" to a position close to "None". 3. Click the "OK" button. 2. Disable 3D acceleration or upgrade the graphics driver. If Windows is configured with 3D acceleration, but the graphics card does not support this function, there may be a "black screen" failure when running games or multimedia programs. 1. Click Start, click Run, and then type dxdiag in the open box and press Enter. 2. Select the "Display" tab, and click the "Test Direct 3D" button under "DirectX Function" to get the correct Direct 3D function. 3. If there is no rotating cube on the screen, the graphics card does not support 3D acceleration. At this point, please click the "Disable" button after "Direct 3D Acceleration" to disable this function. If your graphics card does not support 3D acceleration, in addition to disabling this function, you can also contact the graphics card manufacturer to update the driver to support 3D acceleration of DirectX. Another aspect is that some graphics cards do not support OPENGL. If you choose this function when playing games, it may also lead to a black screen! Solution: generally set in the game. For example, anti-terrorism elite, open the game control, find the video settings, you can see OPENGL support, and cancel the support to return to normal! Third, the driver of the graphics card is not compatible with the graphics card. DirectX setup may incorrectly detect the graphics card and install drivers that cannot be driven normally. Please confirm whether the video card driver you are using is correct. 1. Click Start, click Control Panel, and then double-click System. 2. Select the Hardware tab, click the Device Manager button, then click the+sign before the Display Card or Display Adapter, right-click the display adapter under it, and then click the Properties button. 3. Select the Drivers tab, and then click the Driver Details button to display the video card drivers used. If the driver you are using is not compatible with your video card, click the Update Driver button in the Drivers tab, and then follow the instructions on the screen to install a new version of the driver for your video card. Well, through the soft and hard solutions we introduced above, we can basically cope with most black screen situations. If there is something wrong with everyone's machine, you might as well take it out and have a try.
2. The high-tech notebook computer is black. Why?
Turn on the direct black screen: first, see if your monitor power is on, and if it is, see if your monitor switch is on; Secondly, check whether the power indicator light of your host computer is on. If it doesn't turn on, please consider that your power supply may be broken. If it is on, please listen to the sound of the host after it is powered on. If there is a crisp beep sound and the fans of the power supply, cpu and graphics card are all turned on, then it is necessary to consider whether there is something wrong with your graphics card. If it's a continuous beep, see if your graphics card and the gold finger in the memory have poor oxidation contact, and then reinstall it after polishing. If the screen is still black, look at your cpu and its power module, see if the capacitance around the CPU is Explosicum, and smell if it is burnt. If there is a smell, the hardware is damaged. Take it to the computer shop for repair.
Win7 turns on the black screen, but you can see the mouse 1. At the same time, press the keyboard Ctrl+Alt+Del (of course, before this step, you must first ensure that the computer is connected to the keyboard), select Start Task Manager in the list, and the task manager will pop up. Click the file-New Task in the upper left corner with the mouse, as shown below: Enter explorer in the new task dialog box that pops up and confirm.
2。 Click the "Start" button in the lower left corner of the screen, enter "regedit" in the text box to enter, and press enter to enter the registry, as shown in the following figure: expand the registry options in turn: HKEY _ Local _ Machine \ Software \ Microsoft \ Windows NT \ Current Version \ Winlogon, (click the corresponding item, that is, drop down to expand its subitems, find the corresponding option in the subitems, and find the Winlogon item in turn.
As shown below: Find the winlogon item, click it, find the "Shell" item in the list on the right side of the screen, click it with the right mouse button, and select "Modify" in the drop-down menu, as shown below: In the pop-up "Edit String" dialog box, delete "Resource Manager" in "Digital Data". Exe ",click OK to close the registry, as shown below: At this point, the problem should be completely solved. Besides, the problem is caused by an China virus. Please check your computer for viruses.
If this method can't be solved, there is no other better way. Recommend to reinstall the system.
3.3. The GETEK Hi-Tech computer has a black screen after refreshing.
There are several ways to solve the black screen:
1。 Try to start the computer. After the computer brand is displayed, press F8, press enter, press enter, enter safe mode, and start at advanced level.
Options, and finally the correct configuration, enter, enter, press the key to try!
2。 Enter the safe mode, start normally, enter the car, and after reaching the desktop, use Baidu antivirus to completely kill the virus!
3。 Usage: Baidu Guardian conducts a comprehensive physical examination of the computer, kills Trojans and repairs the computer.
4。 Unplug the video card, memory stick and eraser, and then clean the slot dust and fan with a brush.
Replace memory slots, etc!
5。 Download and install the "Driver Wizard", upgrade: graphics card driver!
6。 Restart, if it still doesn't work, you need to "restore with one button" or "reinstall the system"!
I wish I could help you,
4. Computer monitor black screen
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Hello, I'm glad to answer your question. I hope it helps you.
There are many reasons for the black screen. First of all, it is caused by a virus. Try to kill the virus completely. Second, there is a problem with the system, or there is a conflict between software and hardware. Reinstalling the system can solve it. Third, there is a graphics card problem. The video card driver is wrong or the video card is broken or loose. Clean up the dust on the chassis, wipe off the gold finger of the graphics card with elephant skin to see if it is magnetized. Fourth, hardware problems, such as memory chips, CPU, graphics motherboard and other hardware, is there a loose monitor? The monitor is broken. 6 Hardware acceleration setting is too high, out of frequency range. Click Windows Start Menu-Control Panel-Double-click Display-Troubleshooting tab. Under the hardware acceleration, gradually drag the slider from "All" to a position close to "None"-click the OK button. 7 If the BIOS setting is incorrect or the overclocking is unsuccessful, the BIOS setting can be restored to the default value by discharging the motherboard. 8. Open the program black screen, such as games. First, the graphics card does not meet the requirements of the game black screen, and second, it conflicts with the program. The result collapsed because of Microsoft's black screen plan. 9. It is recommended to reinstall the system-
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