Just built first compter....NEED HELP!!!

[BoBo T Lesnar]

I just built my first computer last weekend, and I got it to work. I installed windows xp pro, some games and other programs I wanted. It worked fine for about 4 hours that day. The next day I took it home and turned it on, and it came on for a split second and shut right back off. It keeps doing this. Now I'm thinking maybe the motherboard is shorting out. I installed the standoffs and everything, checked my connections a dozen times and nothing appears to be out of the ordinary. WHAT DO I DO???????????

 

[BoBo T Lesnar]

no one can help me????

 

[spanky]

r u getting any sort of beeps?

beeps are error codes from the motherboard.

 

[BoBo T Lesnar]

no beeps whatsoever

 

[spanky]

disconnect everything from the pc, leaving on the bare essentials... which are motherboard, power supply, ram, cpu, and video card. then see if u can boot. if u still cannot boot... its gotta be one of those parts, or a short as u have already suggested.

 

[spanky]

bad ram or cpu usually gives beeps. sounds like a mobo or psu issue to me.

 

[BoBo T Lesnar]

Forgot to mention that I tried another power supply and it the exact same thing

 

[spanky]

perhaps u can try to reseat the motherboard.

(yeah its a pain in the ass)

 

[BoBo T Lesnar]

I was trying to avoid doing that, but I'll give it a try...thanx

 

[mechBgon]

What exact brand and model are the two power supplies you've tried so far?

 

[BoBo T Lesnar]

It still won't work!! One is a 450W PowMax and the other is a generic 450W that came with my case

 

[BoBo T Lesnar]

it comes on for a split second then cuts off...It wants to power up, but it doesn't

 

[Uncle Bob]

so the machine worked at your workplace for several hours. after that you took it home and it didn't work. is it possible something came loose? is the 4 pin square power connected connected to the motherboard? might the heatsink have become detached? is the cpu fan plugged in?

otherwise it sounds to me like a failed CPU or motherboard and the only sure way to tell is to replace one of them with a known good part.

 

[BoBo T Lesnar]

Everything is connected...I've checked dozens of times. When the power is on the light on the motherboard stays on like is supposed to, so does the power switch light. I hope its not a bad motherboard, but getting the same board shouldn't be a problem.

 

[Jeffyboy]

Take out all the un-necessary parts and reseat the motherboard and CPU and memory. Worst case... may be a bad Motherboard. Very unusual a bad CPU. Maybe the heatsink isn't mounted properly.
Not sure... something is definately bad.

Jeff

 

[mechBgon]

Originally posted by: BoBo T Lesnar
It still won't work!! One is a 450W PowMax and the other is a generic 450W that came with my case

So two trashy ones, then. Got a high-quality 24-pin PSU you can try in there? Otherwise, as a fact-finding step, try removing the PCI-Express video card and use an old leftover PCI video card such as a 1MB Cirrus Logic 5446 or something.

If you want some advice on a high-quality new power supply, check out this one: http://www.newegg.com/app/View...tion=17-104-934&depa=0 It has the 24-pin ATX 2.0 connector, a PCI-Express 6-pin video power connector, dual 12-volt rails, and it's made by a company that's earned a solid reputation. Which we cannot say for some companies I could mention :roll: And if that's not enough, it has sleeved cables :Q ooOOoo!!!

I know that's not what you wanted to hear, spend another $90-100 on this. But I think it would be a good idea.