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This article mainly shows you "how to solve the problem of no signal on the display in win7", which is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "how to solve the problem of no signal on display in win7".

Solution 1:

1. First of all, check whether the external wiring of the computer is connected properly, and reseat each connection to see if the fault is eliminated.

2. If the fault is still the same, then open the main chassis to see if there is any excess metal in the chassis, or the short circuit caused by the deformation of the motherboard, smell the burning smell in the chassis, whether there is a burnt chip on the motherboard, and whether the capacitance around the CPU is damaged.

3. If not, then clean up the dust on the motherboard and check if the computer is normal.

4. If the fault is still the same, then unplug the reset cable and other switches and indicator lights on the motherboard, and then use the cone short-circuit switch to see if it can be turned on.

5. If the computer cannot be turned on, then use the minimum system method to unplug the data cable of the hard disk, floppy drive and CD-ROM drive, and then check whether the computer can be turned on. If the computer monitor shows a boot screen, the problem lies in these devices.

Then connect the above several devices to the computer one by one, when connected to a certain equipment, the fault reappears, indicating that the fault is caused by this equipment, and finally focus on checking the equipment.

6. If the fault continues, the fault may be caused by memory, video card, CPU, motherboard and other devices. Then use plug and unplug method, swap method and other methods to check whether the memory, graphics card, CPU and other equipment are normal, if there is a damaged equipment, replace the damaged equipment.

7. If the memory, graphics card, CPU and other equipment are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc., and test if the computer can display, and then install the motherboard into the chassis for testing until the cause of the failure is found. If the fault remains, the motherboard needs to be returned to the manufacturer for repair.

8. The computer boot does not show but there is an alarm. When the computer starts up, the system BIOS starts to carry out POST (Power-on self-Test). When a fatal error is detected in a device in the computer, it controls the speaker to make a sound report error.

As a result, there may be a failure that the alarm sound is not displayed when the system is turned on. For the computer boot does not show that there is an alarm sound fault can be based on the meaning of the BIOS alarm sound, to check the fault of the equipment, in order to troubleshoot.

Solution 2:

1. It may be due to the failure of the video card driver:

Restart the system, press F8 to enter the "Advanced Settings" menu, select "safe Mode", and then enter the "device Manager" window to uninstall the video card driver. Restart the computer and you can log in normally. After logging in, install the appropriate driver for the graphics card.

2. The "no signal" prompt may be caused by the high resolution set by the system, so that the monitor cannot support it. At this time, the problem can be solved in the following ways:

Restart the system, press the F8 key to enter the "Advanced Settings" menu, enter the "VGA mode (low resolution mode)", then set a lower resolution to save, enter the "normal mode", and finally set a correct resolution.

The above is all the contents of this article entitled "how to solve the problem of No signal on display in win7". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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