My computer won t boot up. 50

If you suspect that there is a problem with the motherboard, try to change the motherboard.

I don't know if the "squeak" sound is the sound of the PC buzzer or the sound of the hard disk starting or other parts, visually check the fan speed is normal, first unplug the memory, turn on the machine to listen to the alarm if there is any change, and then unplug the graphics card to listen, you can judge very little in this situation, I'm afraid you have to use the elimination method to determine the problem, it's best to find a machine that can be used, and replace your memory graphics card power supply one by one.

Downstairs you want to change the motherboard? Where to find a matching motherboard on the old machine.

I suspect it's the power supply in the back that's broken, the one with the fan that's connected to the power cord.

It may be that there is a problem with the motherboard's battery, try changing the battery.

Hello, the general cause of this failure that is not easy to start is the aging of the power supply or the poor contact of the memory and graphics card:

1. Turn off the computer, unplug the memory and graphics card (if any), wipe the interface part with an eraser, and then install it back and try again.

2. If it still can't be started or is difficult to start, it means that the power supply is aging, please replace the power supply in time.

P.S. The sound is different from the previous normal startup, indicating that it failed to start normally, it may be a long or short sound (memory failure), or it may be a long and two short (graphics card failure), please judge according to the actual situation of your computer.

You shut down, unplug the memory, it's best to use an eraser to wipe the gold finger, if you don't have an eraser, you can use your hands, and finally use a toothbrush (don't get wet) to carefully brush the memory stick slot a few times, and then plug in the memory, try.

Press F8 after starting, and wait for the boot menu to come out, select the "Last correct configuration" item to try, and then you can only reinstall the system, hehe!

There is an interface on the motherboard that can be connected to a small speaker on the case, and the sound emitted by this horn can indicate some malfunctions in the operation of our computer. The problem you describe is generally nothing more than one of these situations:

1。The memory module is faulty or loose. You can plug it back in and see if it gets better.

2。The graphics card is faulty or loose or poorly connected. Check the contact between the graphics card and the motherboard, and check the connection of the signal cable of the display.

3。Power failure. The power here refers to the power supply in your case. Sometimes the power supply quality is not good, and the unstable power supply will also cause the machine to be unable to start.

4。Motherboard failure. The motherboard's BIOS or hardware is faulty.

If the motherboard BIOS settings are incorrect, you can remove one of the coin cell batteries from the motherboard and wait 30 seconds before installing it. This can be carried out to erase the BIOS of incorrect settings. If the motherboard hardware cavity is faulty, then it has to be returned to the manufacturer for repair.

5。Faulty display.

For the above situations, the 1st and 2nd cases are more likely to occur, and the 5th type also occurs from time to time. Types 3-4 are generally common on older machines. Because my working environment is an Internet café, I am used to swapping the hardware with other machines one by one to test for failures when the machine breaks.