The computer can t even start the system disk, and the power light is on and the red light is not on

Turn it on to see the cpu fan turn?

If you don't turn around, try changing the power supply.

I think it's because your heat dissipation is not good, try changing the case fan.

The CPU is not well dissipated, and it is easy to crash.

I would like to ask, do you force the shutdown directly by unplugging the power or pressing the on/off button on the chassis? If you unplug the power, then you will be in big trouble, it is estimated that the hard disk is sacrificed, you unplug the hard disk to see if it can pass the self-test, OK, you have to buy a hard disk.

My computer has also appeared.

After a long time, I didn't go and it was fine again.

Can't turn on the machine or can't time the system, the difference is big.

What is the BIOS prompt sound when the boot is turned on?

You can tell what the problem is based on the alarm sound.

How does the display prompt, is there no signal?

If that's the case, change the memory module to another slot and try again. No, check the motherboard.

First look at your motherboard BIOS if it's a disc boot. If not, check the hard drive. If there are bad sectors on the hard disk. Can't do it into the system. Nor can it enter the system.

Disassemble the chassis to see if it burns out.

<> computer host red light does not light up and cannot be turned on: generally green is the power supply, if this is not lit, it is estimated that there is a problem with the motherboard, usually a flashing red light is the hard disk light, this is not lit should be a problem with the hard disk or line. The most common are:

The power cord of the computer host is not properly connected, the monitor switch is not turned on, and the monitor power supply or monitor data cable is not in good contact.

This answer is available for most computer brands like HP, Dell, Asus, etc.

The little red light on my computer is always not on, everyone here can please help me solve the problem, please?

Summary. 1. If the keyboard light is not lit, first wipe the memory module with an eraser, and check whether the gold finger of the memory module has any burnt marks. Replace the memory in the slot.

2. Check the capacitors and resistors on the motherboard to see if the capacitors are bulging, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard. 3. Remove the CPU fan, power on and turn on, test whether the CPU has a temperature change by hand, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in well, and the power supply is re-plugged. 5. If the display card is loose or oxidized, the keyboard light will be on, the screen will not be displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging.

The computer computer lights up red and can't start.

Hello. The red light keeps flashing, there must be something wrong with the computer hardware, it is best to use the replacement method to eliminate the problem, and the judgment method is as follows:

1. Press the size and slump keys on the keyboard. The light is on, indicating that the graphics card, monitor, and other hardware are faulty. 2. If the keyboard light does not light up, it means that it is a power supply problem with the memory, CPU, motherboard, or caller.

Here's how to solve it.

1. If the keyboard light is not lit, first wipe the memory module with a wax silver eraser, and check whether the gold finger of the memory module has any burnt marks. Replace the memory in the slot. 2. Check the capacitors and resistors on the motherboard to see if the capacitors are bulging, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard.

3. Remove the CPU fan, power on and turn it on, and test whether the CPU has a temperature change by hand with the skin, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in well, and the power supply is re-plugged and replaced. 5. If the display card is loose or oxidized, the keyboard light will be on, the screen will not be displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging.

6. The minimum old seller pickpocketing test method, only leave the power supply, motherboard, CPU, memory, graphics card, key with the old disk, display, unplug the rest of the lines on the motherboard, use a wire cutter to short the switch pins, if normal, then add the rest of the hardware, piece by piece, until the cause of the problem is found.

If you are not familiar with the computer hardware, it is recommended to find a professional maintenance personnel to deal with it.