Computer turns on then turns off HELP

[flyingdutchman]

Hey guys,

So I just installed a new case and tested out my fans and everything seemed to be working fine. My computer was booting up properly and I could use my computer. Then I put a USB into the front slot and the comp froze. So i did a hard reset and now the computer turns on for 2 secs and then turns off.
I checked the video card, ram and the light on the motherboard is on when the power supply is connected. Also, I disconnected the front usb slots from the motherboard.

Any ideas? Im freaking out

[Hairball]

Hmm.. did you try unplugging all the extra non-necessary things? Try to start up as bare as you can.

It's possible if the USB wasn't wired properly that it fried something.

[terrybear]

lack of powerfull enought powersupply ???

bad usb port ??? port wires not put on correctly ??

as hairball said if the wires are not placed properly it can fry things. Thats why I ususaly never connect my cases usb ports cause there ususaly not that well labeled as ones that ususaly come on a pci bracket.

[Gee]

This is usually caused by a short or blown caps.

If your system is older, Pentium 4 era, it could be blown caps. If it is newer, check for a short.

[terrybear]

This is usually caused by a short or blown caps.

If your system is older, Pentium 4 era, it could be blown caps. If it is newer, check for a short.

this also.

[flyingdutchman]

so how would I know if its a short/blown cap?

I tried everything....

Running

AMD X2 with an ASUS motherboard

[flyingdutchman]

also, if it is indeed a short circuit or blown cap, would the green light on the motherboard still light up when the power supply is connected?

[flyingdutchman]

anyone got any ideas?

[Gee]

If it is a blown cap, check around the processor area for bulging caps or leaking caps.

[flyingdutchman]

If it is a blown cap, check around the processor area for buldging caps or leaking caps.

I did that and I dont find anything wrong....I even took out all the parts and put it back in and still didnt work (thought maybe it was just a wiring error)

[Gee]

If you took everything out, it should eliminate any chance of a short.

Did you try a different power supply?

[flyingdutchman]

If you took everything out, it should eliminate any chance of a short.

Did you try a different power supply?

not really since the only other power supply I have is the one on the computer I am using right now and I dont want to risk losing this power supply if it was INDEED the power supply that blew.

But like the power supply is fairly new (less than 6 months) and I dont smell anything burning and the psu fan runs properly

[Gee]

How about removing the suspect power supply and trying it on your current computer. This way we can eliminate the possibility.

[flyingdutchman]

How about removing the suspect power supply and trying it on your current computer. This way we can eliminate the possibility.

I thought of that but then like I said if it was the psu then wouldnt it screw up my current comp like it did to my previos one?

I dont understand though, all I did was change my case and eveything was running perfectly and I was testing everything and it seemed to be running fine and then I popped in my USB and the comp froze and after that it was all downhill.

[Gee]

It is hard to say. You have to try something. I suggest you change the power supply, it should not blow up your current computer if it doesn't have adequate power. It just won't turn on. If it has adequate power, then it will turn on. The risk is almost zero. Unless there is a power spike, the chances if it harming your computer is almost none.

Even if there was a spike, it would blow the fuse in the power supply first.