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  Plz help with my new PC going Pooof and Powering off. 
 
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Paul Steel Apr 11, 2005, 08:57am EDT Reply - Quote - Report Abuse
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Hi.
Thank you in advance for any help you can offer!

I have bought a new PC to my Spec and it weas delivered about 3 weeks ago. I'm happy with the Spec as I had to think about how much I could spend etc..

The problem is this: Sometimes, after I've been playing a 3D game like Matrix Online or FarCry for say 30mins, I hear a noise from the case a bit like "Shorting" or a piece of paper being put into a fan. It's starts quiet and gets louder until, all of a sudden, the PC powers off with a Poof. It can be powered on again and it boots up into Windows XP fine and sometimes it wont happen again. I don't really want to send it back as I really need it. I'm not sure if it's overheating or if the power supply is defective. Is there a way to test the power supply or processor etc..

There are a few things I've looked at though....

1st the Spec:
Asus A8N-SLI Deluxe Motherboard
1 GB Kingston DDR400 RAM
550W Power Supply
AMD 64 4000+ CPU and has a Gigabyte 3D Cooler fan on it
Inno3D 6800GT x 1
2 x 250GB SATA Disks (16mb cache) in Raid 0 (Stripe)
DVD Reader
Case has a 120mm fan.

2nd:
Using the supplied AI Booster software that comes with the mobo and nvidea software I can see that when the 3D games are running the CPU raises to 66 degrees C (it's about 44 when idle). which sounds high to me. The GPU only runs up to about 55 degrees C.

3rd:
Nothing is OC'd

4th:
I've opened the side of the case and left it open. I played the game all day yesturday with not problem but then this is intermittent so thats not full proof.

5th:
I've checked that everything is seated correctly in case it was damaged in transit although it was very well packed.

6th:
I've left the PC running with windows for a full day and night without problems. It really seems associated with the 3d graphics.

7th:
I've ordered an exhaust for a pci slot and also a different Case fan (120mm) just in case but should I really need all this cooling?? What temperature should these chips be running at??

Please help
Paul


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Ben woodway Apr 11, 2005, 12:58pm EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Hi, I think its heat but not sure, All I can say is try a Burn-in software to target the hardware
like GPU/CPU/RAM etc. (passmark Burn-in test is good)

You can get a lot of them from the web, try http://www.utilitygeek.com
Also You should try a very good 3D Screen saver or benchmark let it run and see what happen.

Also try blowing a table fan at the side of the open case if that don't work then adding
more case fan won't help.

Good luck.

Paul Steel Apr 18, 2005, 05:02am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Hi again,

Well I've tried some burn-in software and it reports no problems but I've noticed that the burn-in tests don't test the 3D capabilities and this only happens during intense 3D game play (Matrix Online, Half-Life2).

Well because I thought my problem was heat I changed the basic 120mm Chasis fan with an Antec one that plugs into the mobo so it can be monitored. I also added an Exhaust fan card below the 6800GT. The temperatures are lower now with my CPU @ 38C @ idle. My mobo seems constant at around 33C.

The CPU goes up to 62C and the GPU to 83C when playing major 3D games.

My problem still exists...I start to hear a sound like "shorting" and if I don't quit the 3D game quick then the PC switches off.

I have been running the PC Probe software that came with the mobo. It can monitor fan speeds, temperatures and voltages. Last time this happened (Saturday) I did notice (and get a warning) from the PC Probe software saying that the 12V line had dropped to 11.2. After quiting the game the voltage slowly returned to 11.8 and the sound dissipated and no power off..

Does this indicate a fault with the PSU or the 6800GT? I'm assuming my temperatures are ok?

Please help.
Paul
Thanks

james grant Apr 18, 2005, 06:01am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
It sounds as though it is definitely a heat related problem and the best program to test this out is called "Prime95". It is used to calculate prime numbers but it also has a torture test function under the heading of option. Select this and run for as long sa you want, it will quickly increase the CPU temperature, and the current drain on the power supply, and should therefore get the power supply to fail. I like this program because for intermitent faults, you can replicate them easily with this software...

Paul Steel Apr 18, 2005, 06:33am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Thanks. I'll check that software out tonight..But do you think it's the PSU overheating or the CPU..and what's this noise I hear (like "ttzzzz...ttttzzzzzzzzz..", shorting out sound). It starts quiet but gets louder until the PC switches off...

Jonathan A Apr 18, 2005, 07:26am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
I think It is An Heat Related Problem Two. I recommend that you keep your cool as possible. And all ways monitor your Temps. And make sure no cables are touching the CPU fan.
Good Luck Hope You Can Fix The Problem

AMD AM2 Dual Core 4600
OCZ Value Pro DDR II 2048 PC5400
Asus M2N32-SLI Deluxe
Western Digital 320GB SATA II
Leadtek 7600GT TDH
Creative X-Fi Extreme Music
Leadtek DTV100
LG Light Scribe Dual Layer Burner
Thermaltake Suprano Case
Antec True
Paul Steel Apr 26, 2005, 07:02am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.

OK..

I've replace the PSU with a replacement (Colorsit 550W model: 550U).

The problem still exists. I have been monitoring my heat and the CPU doesn't go above 65C at full throttle. The mobo only reaches a max of 35C and the 6800GT only gets to 75C (the max allowed for it is 127C?).

I really can't believe it's heat causing this???

I have also noticed the VERY occasional problem with the 6800GT on bootup. I have received the odd message from the mobo that the VGA card could not be initialised. A power-off and on cures it?? Is this linked do you think??

Paul Steel

Sven Erik Knop Apr 26, 2005, 08:55am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Hi

I had the same power supply, the 550W Colorsit PSU, and found it a pain. Not only would it shut down occasionally with power problems, but the fan often gives a high whirring noise as well - and this after replacing it once, the first one would not even boot with 4 hard drives attached.

I went away today and replaced the power supply with a decent Antec NeoPower 480W, which despite the lower official power rating seems to provide my PC with stable power without any problems and it's fan is silent.
1 hour FarCry without a crash!

Rest of the spec

XP64 3500+ (Winchester)
3 GB RAM (2*1GB, 2*512MB)
3 SATA drives
1 ATA drive
2 DVD Drives
6800GT

Cheers

Sven Erik


Paul Steel Apr 26, 2005, 09:15am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.

Thank God I've found someone with similar problems.

Did you notice any issues with the Power delivered on the rails using any monitoring software before you swapped the PSUs.. Mine was running 11.7V at idle and consistently dropped to 11.2 when running 3d Games. How did your power problems show themselves??

Will you please post back to this forum in a few days time to let me know how it goes with your new power supply?

Sven Erik Knop Apr 27, 2005, 12:22pm EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Ok

day 2 of testing with the new power supply.

The good news is that the power supply is rock solid. Monitor software claims that 12V is actually only 11.584, but this Voltage stays stable no matter what I throw at the machine.
My old PSU would just shut off. I needed to completely switch off the machine and separate power from the power supply to be able to restart it again.

The bad news is that 4 hard drives in the case I bought generates too much heat. In Far Cry after a few minutes the motherboard will shut down the machine (power supply still running). The problem disappears if I leave the door open, not a very satisfying solution. I will take one hard drive out now and surround it with a Antec Hard drive cooler. Lets see if that solves the problem, otherwise its another 50 quid to get a proper Antec case with hard drive fans.

Stay tuned ....


Sven Erik Knop Apr 27, 2005, 01:33pm EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Stupid question

the spec sounds so familiar - you wouldn't have ordered this PC at PC Specialist by any chance?

Cheers

Sven Erik

Paul Steel Apr 28, 2005, 04:19am EDT Reply - Quote - Report Abuse
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Edited: Apr 28, 2005, 04:28am EDT

 
>> Re: Plz help with my new PC going Pooof and Powering off.
Yes I did!

I hope you've had better luck with them than me..The spec is good for the price BUT when I received it they hadn't set up the Raid 0 so only one disk was showing and they'd installed Windows on that single disk. This was my first Raid set up so I had a learning experience because they didn't ever call me back with the solution even after two days chasing them. So I figure it out myself and rebuilt the software.Their first response was that the windows drivers hadn't been loaded...yer right!!

Then with this power\heat?? issue..After the above I thought that they were not going to solve this! I spoke to them about it and they immediately said it was the power supply. Alas, replacing with the same model power supply hasn't helped but then if it's not up to the job then there's no surprise.

Becuase of the strange 'Shorting' noice I mentioned, I replaced the stock black 120mm internal fan with an antec one and connected it to the mobo for monitoring. I even added an Exhaust fan in a PCI slot immediately below the 6800GT card.

I still get the powering off but I can't re-create it by will. My heat is quite low compared to other people I've seen with the mobo never going above 35C, the CPU never going above 66C and the 6800GT never going above 75C.

I too noticed that the hard drives (only 2) were VERY hot to touch.

You know the only thing stopping me from building my own PC was connecting up the Power supply and putting the mobo into the case. Funny that I've now had to replace the PSU and I think the mobo fitment doesn't sound that tough so maybe I should have done it myself especially after seeing how much I paid for the PSU and what I got for it.

The PC does match the spec I asked for though...I didn't worry about the PSU since at the time I thought that a 550W PSU was a 550W PSU LOL

I have added another 1Gig of Kingtson RAM (matching what's already there) and also an Audigy 2 ZS since apparently it's better than the onboard (not that I've noticed mind) lol

I'll also look at the Hard Drive coolers now...If I had the dosh then I'd like to get 2x74MB Raptors to set up in Raid 0 for the OS but we'll see.

Anyway....Back to this power off problem...So what next? Heat? Power? Bad Mobo? Bad CPU? Bad Inno3D Card???!

P


Sven Erik Knop Apr 28, 2005, 06:29am EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Thought so (PC Specialist).

The only reason I bought from them was that at the time when I planned the spec for my new computer they were the only ones who supplied the parts. Nowadays I could have got anything from Dabs but cheaper :-( This is the last computer I buy assembled!

The PC case is below par as was the power supply. I have replaced the power supply with the Antec, the rear 120 mm fan with an Antec fan and put one of the hard drives into an Antec HD cooler (spotting a theme here ??).

I still have the problem that 10 min into Far Cry (my preferred torture test) the machine shuts down if I do not remove the side panel. Currently I am running Prime95 and can see that the motherboard gets hotter and hotter, this is obviously my problem.

I guess I will check the system for a few days to see if it runs stable on "normal" applications and probably get the Antec P160 case, which has space for 2 120mm fans.

Good luck

Sven Erik

Paul Steel Aug 01, 2005, 02:26pm EDT Reply - Quote - Report Abuse
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>> Re: Plz help with my new PC going Pooof and Powering off.
Hey.

Have you had any luck fixing this?

P


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