The main unit can t be turned on, and the power light is on, which is normal. There is no sound of t

Your situation is most likely due to the following:

1.The power supply is insufficient.

2.The graphics card is not in good contact with the motherboard (only if your machine is a discrete graphics card, not an integrated graphics card).

Solution: For 1, you can choose to repair the power supply (about twenty or thirty yuan, but it is easy to fail again); buy an old power supply (probably a few dozens); Buy a new power supply (because the power supply has a great impact on the computer, so if you add silver, you should buy a better power supply, which is beneficial to the machine).

For 2, you can remove the graphics card, carefully wipe the gold finger and then reinsert it into the machine, taking care that the screws are properly tightened.

Specific implementation steps:

After turning off the power switch of the computer, first unplug the hard disk, optical drive and power supply, then remove the graphics card and memory module, wipe the gold finger and reinstall it, then check whether the monitor plug and the graphics card are plugged in tightly, then remove the battery on the motherboard, put it back on the motherboard after about half a minute, and finally turn on the power switch.

If the monitor is working properly at this time, turn off the power again, connect the hard disk and optical drive to the power supply, and then turn the power back on. If the machine is working properly, then it may be that your memory module or graphics card is not plugged in tightly, if the machine does not work, then the power supply is insufficient, and you can only change the power supply.

If the monitor still does not display the image at this time, but the case starts normally, then it is estimated that there is a problem with your graphics card, which is a hard fault, and you can only replace the graphics card or find someone to repair it.

In this case, most of them are memory quality problems or power supply problems, and they basically need to be replaced.

This is not lit up- -Or ask someone to take the test card to see it**Can't detect it.,The preliminary estimate may be a power supply problem and a CPU problem.,It may also be the motherboard capacitor.。

The graphics card also tried it, and when the power is always turned off to see if the fan is too hot, it will automatically shut down.

When the computer starts up, check the memory first, and then wipe it back and plug it in tightly. If it can't be solved, there is a problem with other hardware, give you the most complete information, and read and judge it carefully according to the specific situation: if you look at these carefully and carefully and do not help you, send them directly for inspection.

1. Repeated short ring: power supply problem. "Didi..."Continuous, short tones are generally common when there is a problem with the power supply of the main unit.

2. 1 long 9 short: Motherboard flash RAM or EPROM error, BIOS corruption. Try a different block of flash ram.

Constant ringing (long sound): The memory module is not plugged in tightly or damaged. If it still doesn't work, you can only replace a memory module.

Ringing: The power supply and monitor are not properly connected to the graphics card. Check all the plugs.

3."Tick...""Tick..."", a continuous interval of long tones. The sound of memory alarm is generally due to loose memory, poor contact between the gold finger of the memory and the memory slot, oxidation of the gold finger of the memory, and failure of a chip in the memory.

4."Tick...", Didi" a long and two short continuous chirps; This is a graphics card alarm, usually the graphics card is loose, the graphics card is damaged, or the power supply part of the graphics card of the motherboard is faulty.

5.There is no movement after two long tones of "beep", and after a while, you will hear the sound of "squeak" reading floppy drive.

Long 3 Short: Keyboard controller error. Check the motherboard.

7. 2 short: General error, please go to CMOS setup and reset the incorrect options.

8. 1 long and 1 short: RAM or motherboard error. Try to change the memory, if it still doesn't work, you have to change the motherboard.

Hello, this is because the memory module is dusty, and it is recommended that users wipe the memory module. The computer tick is a computer self-test alarm, and it can generally be determined which part of the computer is faulty according to the length and interval of the sound. To see if the user's host is connected to the power supply is grounded, if the host is not grounded, there is a power supply on the host, it is easy to generate static electricity, the solution is to change a grounded power supply, try, to see if it can be turned on.

If it still can't solve the problem, then it may be that the power supply of the host is broken, and it must be replaced with a power supply.

Hello dear, if your computer host keeps ticking, but it can't turn on, it may be caused by one of the following reasons:1Power failure:

A power failure may cause your computer to not turn on properly. You can check whether the power supply is properly connected, whether the power cord is damaged by the state, etc., or try to replace the power supply. 2.

Hardware failure: If the internal hardware of your computer fails, such as hard disk, memory, motherboard, etc., it may cause the computer to fail to boot normally. You can try replugging the hardware or replacing it.

3.System failure: Some system failures, such as virus infection, system damage, etc., may also cause the computer to fail to boot properly.

You can try to fix it using Safe Mode or Recovery Mode.

Didi sound is a problem with memory, occasional vibration or long-term oxidation of gold fingers resulting in poor acceptance. Plug the memory card back in.

FYI.

Constant ringing (long sound): The memory module is not plugged in tightly or damaged. If it still doesn't work, you can only replace a memory module.

Ringing: The power supply and monitor are not properly connected to the graphics card. Check all the plugs.

Repeated short rings: Power supply issues.