Desktops won t turn on 100, desktops won t turn on

Generally, the computer screen is not displayed or the computer does not start, there are the following four situations:

1. Loose memory modules, poor contact, and dust accumulation will cause the screen not to be displayed and the computer not to start.

Solution: Unplug the power supply, remove the memory module, remove the floating dust at the interface with an eraser, and wipe it clean with letter paper. Put the memory module in alignment, put the index finger of both hands against both ends of the card holder, press the memory module with your thumb, press down, and hear the "click" sound, it's OK.

2. Loose graphics card, poor contact, and dust accumulation will cause the screen not to be displayed and the computer not to start.

Solution: Unplug the power supply, remove the graphics card, remove the floating dust at the interface with an eraser, and wipe it clean with a letter paper. Align the graphics card, press down and fix it, and you're done. The graphics card is damaged and needs to be replaced.

3. Motherboard problems. Solution: Unplug the power supply, remove the motherboard battery, and jump the CMOS jumper to"colse"position, hold for more than five minutes, install the battery, and resume the jumper.

That's it. Or use a paper clip to turn on the positive and negative electrodes of the CMOS on the motherboard for more than five minutes, and it will be OK.

4. There is a problem with the monitor and VGA cable. Solution: Test and judge on another machine. Reconnect, tighten the VGA plug.

Depending on your account, it's more likely that the monitor is connected to the VGA, or the memory module or graphics card is loose.

Suggestion: Check in the order of memory first, then graphics card, then motherboard and monitor, it will be more efficient to find the problem.

It's still like this after changing the host, it must be a display problem.

What should I do if my desktop suddenly won't turn on?

From the provided situation, the problem is that your motherboard is not booting. The CPU should be already working. There are several solutions to the problem for reference:

One is to try to change the power supply, if your power supply is problematic or the power is insufficient, the motherboard will not light up.

The second is to turn off the power, remove the motherboard battery, stop for three or five minutes and install it. Sometimes, the CMOS will make an error and the motherboard will not light up, and removing the motherboard battery can correct this problem.

The third is to try to change the memory, sometimes the memory just wiping it can't solve the problem.

The fourth is the problem of the CPU, on the surface it seems that the CPU is working, but in fact it is not working. Changing the CPU will solve the problem.

The fifth motherboard is scrapped, don't think about repairing, it generally doesn't take long to repair a repair.

6. Considering that the machine is old, and the hard disk has been used for a long time, some bad sectors have occurred, etc., resulting in the failure to detect the hard disk and thus not being able to boot up.

Good luck with a successful start-up!

There may be a problem with the fan. Take a look at the problem and replace the fan.

What should I do if my desktop suddenly won't turn on?

There may be a problem with the memory module, plug in the keyboard, turn on the keyboard to see if the num key on the keyboard is lit, if it is not lit, it is very likely to be a problem with the memory module, the solution, after taking out the memory module, rub it with your fingers, and insert it back!!

If you can't turn it on, then you can remove the parts one by one, and after dismantling which one is different from the current reflection, it may be that part is broken.

Memory problems, single interchange test machine.

In this case, it can't be turned on, it depends on whether there is no response when you press the power button or you can't enter the system, you can't reinstall the system if you can't enter the system, and you can't replace the power button if there is no response when you press the power button.