Computer Turns on for 2 seconds then off

[CGras90]

Hey i just got home to my computer off and all the clocks blinking so i guess we lost power for a littlle bit. I went to turn the computer on and it just goes on for about 2 seconds and turns off. Fans and everything spin up and then nothing after 2 seconds. Im thinking its probly something with the PSU but not sure. Specs are in sig. Thanks!

 

[waitman]

Rosewill PSU's are junk for the most part. Can you try another known working power supply? I just replaced a psu for someone with an hp, after the power went out. It fried the psu, luckily it didn't damage anything else. Might try unplugging cdrom, burner etc and boot with the bare essentials, motherboard,hdd and see if it will power on. Regarless, I would replace that psu with an enermax or other good name brand.

 

[Tarrant64]

You can try a hard power off(at least i think that's what people refer to it as) by switching the power button on the PSU off, then turning it back off.

If possible see if there is another PSU around that you can swap out to check everything else is OK. Not that this is just something anyone is able to do, but I don't know your full situation.

And yes, Rosewill I think is junk. However I don't see why it wouldn't power that rig just fine, it doesn't look too intensive/hardcore.

 

[TBaz]

Not familiar with Rosewill myself, but if they are cheap jobbies then I agree that you should buy a decent one and install it asap.

Many of the cheaper china-built PSU's have a tendency to 'trip out' after a power cut - resulting in the behaviour you report. In many cases I have found that removing the power cable from the back of the case and leaving it disconnected for 5 or 10 minutes allows the PSU to reset itself.

When you plug it back in again, assuming the power cut caused no other more serious damage, you might be lucky enough to see it power up.

If it does, get hold of a new, better one ready for the next time it happens - it's only a matter of time!

TBaz

 

[DetroitSportsFan]

Originally posted by: Tarrant64
You can try a hard power off(at least i think that's what people refer to it as) by switching the power button on the PSU off, then turning it back off.

If possible see if there is another PSU around that you can swap out to check everything else is OK. Not that this is just something anyone is able to do, but I don't know your full situation.

And yes, Rosewill I think is junk. However I don't see why it wouldn't power that rig just fine, it doesn't look too intensive/hardcore.

Lets take it a step further.

Good quality power supplies are built to withstand power outages and minor power surges without suffering any damage. The good quality power supplies also are designed to protect the board and other expensive hardware when/if the PSU itself fails. Rosewill does advertise that it contains protection circuits .... However, its not known to be of good quality. I'd question whether or not it would live up to its claim of the protection circuit actually working. This alone is a good enough reason to spend the extra money to replace your PSU with something of higher quality.

Edit: I think before I bought a new PSU, I'd want to check out the system to make sure there isn't any other damage. If you can borrow a known good power supply for the purpose of testing your hardware ... then thats the first place to start. Of course, we're assuming that power cycling the psu didn't already fix your problem.

 

[CGras90]

weird, after multiple tries, it finally decided to boot. Its been working fine now but i will get a new psu asap. Thanks!

 

[DetroitSportsFan]

Glad it worked out. If those are your specs in your sig, you shouldn't need something with a killer output rating. Instead, look for quality. You'll be happier in the end.

 

[RebateMonger]

One way or another, you'll want to get a new PSU. Even if the PSU ISN"T bad, it probably took a pretty good hit of some sort and you can't count on it to keep working.