The computer does not respond when it is turned on, and what is the problem that the computer does n

It's the same as not opening, that is, the host is not energized, right, it is related to electricity, a host and a power cord connected to the power cord of the power strip plug to try it, sometimes the power cord is broken, two pay attention to the switch button, whether it is pressed and does not bounce up, open the chassis, three-use touch method to turn on, rule out whether there is a problem with the power line, fourth, take the power supply out, take it to other machines, try it The basic steps are like this.

1. It cannot be turned on and there is no alarm.

The most questionable of the most suspicious causes a failure that cannot be turned on and there is no alarm is the power supply, CPU, and motherboard. Because as long as one of these three pieces of hardware is faulty, the motherboard cannot be started, and the motherboard will not alarm if it is not started. So follow the steps below to check:

1. Measure whether the power supply can output each voltage normally, and when there is no measurement tool, you can use the power supply to directly replace it. Whether the connection between the power supply and the motherboard is reliable, 20 plugs can be plugged and unplugged. The power switch on the panel is damaged.

If necessary, you can directly short the PWR SW header on the motherboard to see if the motherboard can be started. Perform the following checks after you are confident that the power supply is working. 2. Unplug and unplug the CPU, if it doesn't work, change the CPU.

If the CPU can be started after unplugging and unplugging, it means that the CPU is in poor contact. After unplugging the CPU, it can't be started, and the CPU may be damaged, so it is still not possible to change the CPU and change the CPU, and the only thing left is the motherboard. 3. The first choice for motherboard inspection should be whether the CPU socket power supply is normal, followed by the south bridge and the north bridge, the crystal oscillator, the clock generator, etc., you can use the motherboard diagnostic card, of course, these are not the general DIYER can complete, only sent for repair.

2. Common PC failures.

If it is a memory problem: the memory is not plugged in properly, unplug the memory card and polish the gold finger with an eraser, or the memory is broken.

Other problems: 1. The graphics card is not plugged in tightly. 2. Check whether the monitor is damaged. 3. Plug all the cables on the motherboard back in. 4. Reinsert PCI, AGP, or other connection cards.

3. It may be that the system boot file is corrupted.

First of all,Boot press F8,There will be an interface,That interface has let you choose to enter the safe mode, etc.,First select one of the "last correct configuration",If it doesn't work, then select "Safe Mode",You can reinstall a hardware driver in it, etc.,If it doesn't work, the system boot file is destroyed。 There is also a possibility that some people delete some things during the antivirus, and the result is that the system cannot be started, then you can use the repair function of the XP boot disk, boot the computer, select the disc in the BIOS to boot, and put it into the CD, press R to have an XP repair platform.