New Build Problem

noob

noob

noob

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Joined
18 Oct 2002
Posts
2,275
I've built my PC although when I switch it on it can stay on for a few minutes but then it knocks itself off. I've checked the CPU temps in the BIOS and all seems fine. When it does knock itself off sometimes you can switch it on and it lasts a minute or so or it switches itself off straight away. Any ideas?
 
Jeez this could be anything, could you post some specs ig

what is the mobo and bios,
what is the cpu
what is the PSU

How long have you watched the temps in the BIOS as this def sounds like a temp problem. Watch the temps for the whole time and see if it suddenly jumps before the switch off (happened like that to me with a wrongly fitted HSF).
 
Specs are:-

Asus A8N5X nForce4, GeIL 2GB (2x1GB) PC3200 Value Dual Channel Kit, AMD Athlon 64 3700+ San Diego 90nm, Arctic Cooling T1 Silentium Silent Midi Tower Case - 450W Seasonic Silent PSU

Will try watching the temps when I get home.
 
Still doing it but what happens now is you haven't got time to look at the BIOS. I'm sure I've fitted the HSF fine. Just doesn't make sense.
 
Taken everything out of the case only had the CPU with HSF, power plugged in, fans and memory and still the same problem. I've checked the heatsink is fitted ok. Only option I've got left is fitting my mates Zalman CNPS9500-LED Aero Flower if that doesn't work I'm lost.
 
Try taking i stick of RAM out, swapping slots etc. What graphics card are you using? could be lack of power although unlikely as 450W should pack enough punch.

Where in Wales are you?
 
noob said:
Specs are:-

Asus A8N5X nForce4, GeIL 2GB (2x1GB) PC3200 Value Dual Channel Kit, AMD Athlon 64 3700+ San Diego 90nm, Arctic Cooling T1 Silentium Silent Midi Tower Case - 450W Seasonic Silent PSU

Will try watching the temps when I get home.
Click to expand...

I remember reading somewhere that the Silentium case PSU is advertised at peak power of 450W. The actual power is 350W. Is that enough? That could be the problem.
 
He has a Seasonic 450 PSu - this is a top of line make and very stable - unless it is faulty. I wuld try memtest with just one stick of memory in and check each module.

When you say it switches off is this once windows loads and then it just dies?
Or is it before windows botts up and still in the bios check stage?
 
coneypark said:
He has a Seasonic 450 PSu - this is a top of line make and very stable - unless it is faulty.
Click to expand...

You completely missed the point I was making. That PSU comes with the Silentium case. It's advertised as 450W, but that is the peak power. The continous power is 350w.

http://www.arctic-cooling.com/pc_case2.php?idx=4

Website Above said:
-Rated Power = Continuous Power
Most power supplies provide only between 60-80% of the indicated power over a continous amount of time. Our PSU provides 450 Watt max. power for a short time and 350 Watt continuously.
Click to expand...

I don't think 350W is enough.
 
Well its the PSU I have and it is running:-

AMD 3700
2 Gig Corsair memory
512MB 7800GTX Extreme
2 x Samsung Spinpoint 160GB HD's
1 x DVD drive
1 x CD drive
2 x case fans

And has been 100% stable apart from the initial install where I had the same problem which I resolved by doing a clean install and not installing any the Nvidia netmowrk managment stuff.

So unless the PSU is faulty I think it is more than powerful enough.
 
Ok, just thought I'd clear up the marketing hype that companies use :)

It's still worth trying a different PSU to be 100% sure that it is not faulty. Borrow one from a friend or cousin and give it a quick test.
 
Cheers guys. Right in the end I narrowed it down to the CPU, Mobo or PSU. I took it to my local PC shop on Saturday and today they've told me they tested all three. The mobo and CPU are dead apparently the PSU is fine. They seem to think the mobo was faulty in the first place and may have killed the CPU? They also tested the RAM and Graphics card both fine.

TBird I live in Caerphilly.
 
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