What to do when the computer turns on monitor without signal

Because the computer began to display no signal for a lot of reasons, so small series can not determine what kind of problems we have, the following small set to teach us the method of analysis, using the elimination of the method of their own computer inspection, the following we look at the method.

1. First of all, we have a comprehensive inspection of the connection between the computer monitor and the host, and plug each line back again to see if there is a connection problem.

2, if the fault is still there, then we need to open the chassis, to see if the case contains metal and other substances, leading to computer circuit short-circuit, then we smell the computer's taste, see if there is a burning smell, to see the motherboard around and the CPU around the presence of damaged components.

3, after checking the entire chassis, the chassis is not abnormal, then we will handle the dust on the chassis.

4, if not boot, and then use the minimum system method, the hard drive, floppy drive, optical drive data cable unplug, and then check whether the computer can boot, if the computer monitor appears the boot screen, then the problem in these several devices. Then one by one the above several devices into the computer, when the access to a certain device, the failure to reproduce, indicating that the fault is caused by this equipment, and finally focus on the inspection of this equipment.

5, if the failure is still there, it is likely that the memory card, graphics, CPU, motherboard, and so on the fault, at this time we only need to plug the hardware, or replace it, try to find out why.

6, if memory, graphics, CPU and other equipment normal, and then the BIOS discharge, using isolation method, the motherboard is placed outside the chassis, connected to memory, graphics, CPU, etc. for testing, if the computer can be shown, and then the motherboard installed in the chassis test until the cause of the failure found. If the failure is still required to return to the manufacturer to repair the motherboard.

7, computer boot without display but there is alarm sound, when the computer boot up, the system BIOS began to post (Power-on self-test), when the computer detected a fatal error in a device, then control the speaker issued a sound report error. Therefore, there may be no power on the display of alarm sound failure. For computer boot without the alarm sound failure can be based on the meaning of the BIOS alarm, to check the failure of the equipment to troubleshoot.

Believe that through the above series of steps, you can find solutions to deal with problems, step-by-step to identify problems, and then targeted to solve the problem.