what will i do if my pc keeps on restarting?

Answer 1

The power Supply
I wouldn't throw out the power supply yet. Make sure that your motherboard is not grounded out onto your case. You can do this by investing in a few of those paper washers that come with motherboards behind the board itself so no parts of it are hitting the chassis of the case. If this solves your problem...good. You know not to do that in the future. If it doesn't...read on.

First things first...it really sounds like you should invest in a power supply tester....I'm assuming that you are using an ATX power supply which means you will be able to use the long main power connector. You'll plug in your power supply tester to it and it will tell you if it is good or bad. I use this one http://www.directron.com/tester1.html from Antec. Make sure your power supply is a green light on the tester and then you'll know that it isn't the problem and that the real problem may lie in your motherboard or one of its components. Got my tester from COMPUSA super store. They suck but they're good for a few things.

Make sure all of your cards/memory/cpu are plugged in all the way and the correct way. Make sure that you are getting the correct voltages in each four pin molex connector...I use a Digital Multimeter for mine and make sure I have 12V where 12V is supposed to go (pin1). Rule of thumb is that the molex connectors (the connectors you plug into your CDROM and HDD) should have 12V and the voltage should be steady in the range around 11.6-12.4 V at all times. You will be able to measure this by going from ground (ground as in put one test lead on your case and the other in the pin1) to pin 1. Pin 4 will be 5VDC. Test every molex 4 pin you have and then you'll know that they are all good. If you still have a problem, then you'll know it lies on your motherboard.

From there it's a matter of disconnecting all hardware and then slowly connecting more hardware with each test. Try powering up with just your CPU/RAM and nothing else....If BIOS comes on...you can generally assume that your CPU/RAM are in decent shape. Then power down and connect your hard disk. If it spins up and attempts to boot an OS...your HDD is probably good. Just keep this up with each piece of hardware. If you had to stop at CPU/RAM then you've isolated it to one or the other (perhaps both) of those. Each step gets you closer to finding out the problem.

But, from the beginning of what you are saying...it sure sounds like you got a bad powersupply. Getting that tester would work like a top...you'd be set. If you don't want to wait for that...here's what voltages you should have in your connectors:

Long 20 Pin Main power:
PIN1: 3.3VDC+
PIN2: 3.3VDC+
PIN3: COM
PIN4: 5VDC+
PIN5: COM
PIN6: 5VDC+
PIN7: COM
PIN8: PWR_OK
PIN9: 5VSB+
PIN10: 12VDC+
PIN11: 3.3VDC+
PIN12: -12VDC
PIN13: COM
PIN14: PS_ON
PIN15: COM
PIN16: COM
PIN17: COM
PIN18: -5VDC
PIN19: 5VDC+
PIN20: 5VDC+

Your COM, PS_ON, and PWR_ON are status signals and won't be measured by a DMM. Test out the voltages with a digital multimeter and if you check out, you should know if your power supply is the culprit. Hope this helps...and hope it wasn't confusing. If you need explanations on anything I've talked about, drop a post and I'll help out!

Answer 2

Press the power button and hold it in.

Or turn off the wall power while it's sort-of-down.

But... fix the problem is the only long-term solution. Someone else asked this about 5 mins before you so go look what was said there.

If this is suddenly happening then maybe virus check should be higher up the priority list.

Answer 3

Dear Princess!!
You are siply virused.
Scan your PC with a strong Virus scan, If it does not solve, just reformat your system partition, and reinstall windows.

Remember!! If you reinstall your windows, you have to call Microsoft for your actvation of windows.

Answer 4

If your computer is not working properly while you are working on it, it could be a problem with device drivers, hardware or software.