Advice needed re new comp

spoony77

spoony77

spoony77

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Joined
10 Aug 2005
Posts
387
Hi people
Got a new pc (second hand) for gaming and it won't boot properly when the gpu is installed (7950).
The motherboard powers up ok but it won't post via the gpu or the onboard graphics. The gpu fans are spinning.
If I remove the gpu the pc will post via the onboard graphics or an alternative smaller cheaper gpu I had lying around.
Does this mean the 7950 is faulty or could it be the power supply not providing enough juice? It's an ocz 550w psu.
How can I find out without another pc at hand?
Any advice appreciated
 
Alternatively, what's the rest of your kit?

I had an i7, usual kinda spec otherwise. I found a 550w with a 480GTX and my raid setup (with other drives a total of about 5 sata drives) was RIGHT on the edge of what my PSU could handle.

The 7950 eats about 140W, have a look at the power requirements of the rest of your kit. Also check what the PSU supplies on it's various rails, I'd imagine the PSU is letting you down somewhere but as ExRayTed mentioned, if you have another system you can try it in, it makes life MUCH easier.

If there's no other way to go about it either try a different PSU (either a friend or distance selling - ahem) or take it down a local computer shop, stump up the £15/20 they'll probably want to test it and you'll have an answer fairly quickly.

http://extreme.outervision.com/psucalculatorlite.jsp will give you a fairly rough ballpark what your system needs and might start to give you a clue whats up.
 
What cpu are you using?

In terms of power the OCZ is ok, but does not rule it out possibly being faulty.

Have tried any stability testing once you be able to get the system to boot?
 
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