Hello, my PC would start and shut down (no POST) repeatedly. Sometimes i can get it started up, other times it will go into this repeated loop of powering up and shutting down. I will need to unplug it from the mains and leave it (sometimes for a day) before i can start it up again. What could be the problem?
PC powers up and shuts down repeatedly
- Thread starter crosstan
- Start date
-
- Tags
- HD Processors
MU_Engineer
Splendid
- Feb 18, 2006
- 3,868
- 4
- 23,165
Faulty motherboard, corrupted BIOS, or a faulty CPU can cause these problems. If it successfully starts and runs at any time, I'd suspect the motherboard being faulty and RMA the motherboard for a new one.
By the way, this isn't an ASUS X48 motherboard that is having these problems, is it?
needsumhelplol
Distinguished
- Jun 13, 2010
- 180
- 0
- 18,710
Since you've had the pc for 4 years, check the power supply first. You'll have to find or get another to test you system, but typically random reboots and issues starting up and immediately shutting down can definitely be psu gone bad. The do loose efficency over time.
MU_Engineer
Splendid
- Feb 18, 2006
- 3,868
- 4
- 23,165
Okay, I thought it was new. I'd agree that a four-year-old board that is acting flaky will almost certainly need to be replaced. Just for grins, take a look at the aluminum electrolytic capacitors on the board and see if any are bulging or leaking.
Thanks to all who have offered their advice. I have yet to resolve the problem. However, I will be able to start the system by first unplugging the 12V ATX connector from the motherboard then powering up, then switch off and plug it back in. This has seemed to work quite consistently. Any further clue? Does this point to a MB problem or PSU problem?
Replaced the 550W Cooler Master PSU with a Seasonic 620W 80+ PSU. Everything is looking good now. Able to start up w/o any issue for now. Even the color of the desktop screen looks more vibrant. Maybe really a PSU issue. Thanks for all inputs and suggestions.
wigginsd88
Distinguished
- Jul 9, 2010
- 19
- 0
- 18,510
Another thing you may want to watch out for: Sometimes when RAM and ESPECIALLY Video RAM is starting to become damaged, these are symptoms that present themselves. If you have not tried it, you may consider trying to consult your manual to find the Exact hows of this, but try to remove sticks of RAM, ensuring that the MOBO is completely without power, one at a time and seeing how the boot-time reacts. This is also true with many parts on legacy MOBOs. If the POST speeds up then the problem part is usually found. If while your Board is booting use see strange names like CH3: WDCkjh!!!!! whereas you should see CH3: WDCj3200D, the problem part is whatever is attached to CH3:. Give it a try if you still have problems.
- Status
Facebook
Twitter
Instagram