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  Computer power keeps turning off 
 
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Xander Khushrenada Apr 06, 2005, 03:32pm EDT Reply - Quote - Report Abuse
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Hey, i've so far tried replacing the motherboard, memory, power supply and the cpu none of these seemed to have fixed my computer... basically what happens is it will stay on for a few mins and then spontaneously turn itself off (power goes off cannot switch power button off then on. Have to actually turn it off with the switch at the back then on again).

here are the specs.


Asus A7N8X-E Deluxe nForce2
Crucial 1GB DDR PC3200 CAS3.0 Dual Channel Kit
AMD Athlon "Barton" XP3200+ 400FSB
Akasa AK-827GN Copper Based CPU Cooler Green Fan
Maxtor DiamondMax Plus 9 120GB 6Y120MO SATA 8MB Cache
Sapphire ATI Radeon 9800SE 128MB DDR


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Mark Robinson Apr 07, 2005, 08:03am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Is the Cpu getting hot? Maybe the video card is getting hot. Either one could and will shut down the system.

Supermicro X6DA8-G
Antec True 550 EPS12V
Dual Intel 2.8 Xeon's with 800 FSB & EMT64
1 GB 2700 DDR
ATI AIW X600 Pro 256 MB PciExpress
ATI Remote Wonder 2
2 IBM Ultrastar 36XP (LVD) SCSI Hard Drives
WinXP Pro
Xander Khushrenada Apr 07, 2005, 12:32pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
no its definately not a temperature issue, i've checked the temperatures on both the physical hardware and the bios.

Wildwood Apr 07, 2005, 12:45pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Are you certain the video card isn't overheating? Because I see the exact same thing over and over with overheating video cards. And yours doesn't have a temperature sensor on it. Try checking the video card fan to be sure it's working properly. And clean out any dust that's collected on it. Running the comp with a desk fan blowing into the case may be a way of determining if it's a heat issue. If it runs well with the fan on it, then that's your problem.


Xander Khushrenada Apr 10, 2005, 04:33am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
yes I went to a friends house and he managed to determine that the video card was overheating (or at least thinking it was overheating) and that is what caused the computer to turn itself off.

Another problem we have encountered is when installing windows 2000 or xp it does not seem to find any hard drive so I can't install either. I am using a SATA (Serial ATA) cable at the moment for my hard drive, should I now try it with a normal ribbon cable to see if windows can find the hard drive? Also my friend thought that the Crucial memory I have bought might not be compatible with my motherboard, but that is quite hard to determine as it does not say if it is or not on the Asus website.

Xander Khushrenada Apr 10, 2005, 05:15am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
ah wait, just ignore that last message a bit. It doesn't appear to be the graphics card overheating as I tried it with another one and it had the same problem, I think its the memory as its 400 DDR but when I startup it only says 200mhz (and I can't change 200mhz to go any higher in the BIOS). The jumper is on the right circuits (i.e. not the 200mhz one) and it also says "single channel mode" when it should be using both my memory chips (although only using 1 memory chip it says the same thing).

Drizzit Apr 10, 2005, 07:47am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
As for the SATA you have to hit F6 to load the Driver you may have to get the RAID driver from manufacture website and put on a floppy! As your installing XP you will see at the bottom to install SCSI drive hit F6 do that and when prompted put the floppy in! Should be butter from there!

As for your RAM you have to have 1 stick in DIMM 1 & 3 or DIMM 2 & 4 to use dual channel! It doesn't say it but in bois when it says 200mhz it's a multiple of 2 so 2x200= 400 so it's correct!

I had a few sytems that had a simular problems booting then power off! Since you have tested everything except RAM and power switch! Try different RAM same problem try Replacing the power switch with the Reset on the motherboard! In the past I would have never said, Power Switch, until it happened to me wasn't till it completely failed that i replaced it, problem gone! It was shorting out! Normaly i would blame PSU, MOBO, RAM or CPU, RAM being last on the list, but since you already tried those you only have a few things left!

Hope this helps!
1 in a 10million on the power switch, but you never know!

Xander Khushrenada Apr 10, 2005, 06:01pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
as for the hitting f6 thing, it asks for a disk in drive A: but I was not given a disk with any drivers on, the drivers appear to be on the cd so I can't install them at all. You are saying my memory sticks are in the wrong place? well thats interesting I will try re-arranging them to see if it makes any difference.

I have checked the ASUS website and the drivers needed are 4MB at least which is too big to fit on a normal floppy disk, I can't seem to install the SATA drivers at all then :S its really quite frustrating, but I did send messages to both the supplier and the company that produces the memory so hopefully one of those will have a better idea.

Just to re-iterate I can run the computer fine when I switch the jumper to go at 200mhz speed, I can get into windows 98 but because I can't install the drivers windows 2000 or xp won't install properly.

Thanks for the suggestions I will look into them further and give more feedback.

Adam J Apr 10, 2005, 06:49pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
The 200mhz report is fine. Your ram is DDR (Double Data Rate, therefore, 2x200=400mhz). If you have a machine with an 800mhz FSB then that is quad-pumped (4x200=800). This is how it works. Did you mount your motherboard onto standoffs? You could have a short or something like that. You musn't mount the motherboard directly to the case! And for the SATA drivers, can you put them on a cd and read it that way? My motherboard was good enough to detect my SATA drives as the normal old PATA ones, I've never had to install drivers for it.

Antec Nine-Hundred
OCZ Modstream 450w
Gigabyte 965P-S3
2x512 DDR2-800 Corsair XMS
Intel Core 2 Duo 1.83Ghz
400GB SATA2 Seagate 7200.10
Arctic Cooling Freezer
Audigy 2 ZS

Apple iMac Core 2 Duo 2Ghz 2GB Ram
Drizzit Apr 10, 2005, 07:59pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Go to your motherboard website and download the RAID driver from there! Put the driver on a floppy and when asked put the floppy in!

I said this in the first line of my last post!

Good luck!

Xander Khushrenada Apr 11, 2005, 03:18am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
yea you did say download the drivers..... but I said they don't fit on a floppy disk, they are 4MB, anyway I have the memory showing up right now but it still turns itself off when it is doing a lot of process' (such as installing windows) i've tried copying the drivers onto a cd but they still won't install onto my computer when I try doing it in windows 98. It would seem to be an overheat that causes the computer to turn itself off but I have checked the temperatures before and after it turns off and it isn't high enough to warrant a power down.

Paul Steel Apr 11, 2005, 10:23am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Hi.

Thank you in advance for any help you can offer!

I have a similar problem with the powering off and it's WEIRD....

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

Xander Khushrenada Apr 15, 2005, 03:26am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
okay well i've managed to get my computer running now, it turned out to be an overheat issue although i'm not sure which component was overheating.

The problem I have now is when I try to play games they will play for 10/20 mins but then there will be a blue screen (with no writing on) for a second flash up then it will restart the computer, any ideas what the issue could be?

Paul Steel Apr 18, 2005, 04:21am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Hi again,

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

Adam J Apr 18, 2005, 12:15pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Power Supply, Power Supply...........Power.........Supply. What I said from the beginning.

Antec Nine-Hundred
OCZ Modstream 450w
Gigabyte 965P-S3
2x512 DDR2-800 Corsair XMS
Intel Core 2 Duo 1.83Ghz
400GB SATA2 Seagate 7200.10
Arctic Cooling Freezer
Audigy 2 ZS

Apple iMac Core 2 Duo 2Ghz 2GB Ram
Paul Steel Apr 18, 2005, 12:24pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off

Raise a cheer as I have spoken to the company that built the PC and they are sending me another Power.....Supply..... :) Hoorah... I hope you're right and that it sorts this problem...

Now I just need to fit it when it arrives on Friday.. Any tips?

Paul

Xander Khushrenada Apr 18, 2005, 01:56pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
I doubt very much it is the power supply, I have 400 watts which is more than enough to run what I have. I get these mini stack dump things isn't that related to memory?

Paul Steel Apr 18, 2005, 05:10pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off

My problem isn't with stack dumps..no BSOD's, no crashes or hangs...The PC just switches off immediately after the high pitched noise I wrote about. It's like someone just pulled the plug.

Well I'll find out on Friday when I get the PSU.

P

Jon Gray Apr 27, 2005, 03:32pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Did the power supply fix the problem?

Paul Steel Apr 28, 2005, 04:25am EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off

In a word...NO...

The replacement was the same model PSU and I still get the problem but I have trouble re-creating it..the only thing I KNOW is that it happens during 3D games.. I still can't believe it's heat because it 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.

The quality of the Colorsit 550W PSU (Model:550U) is in question though??

I have a thread below that may be interesting since some else with a similar config is having the same problem. Take a look at it here: http://www.hardwareanalysis.com/content/topic/42365/

This really is bugging me..
P


Adam J Apr 28, 2005, 05:02pm EDT Reply - Quote - Report Abuse
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>> Re: Computer power keeps turning off
Why the hell would you replace a possible crappy powersupply with an exact same? Doesn't make any sense to me. The thing could be 1000w and still suck. The amps on the 12v line are what is most important. A powersupply can still be a high wattage without that line having significant amps.

Antec Nine-Hundred
OCZ Modstream 450w
Gigabyte 965P-S3
2x512 DDR2-800 Corsair XMS
Intel Core 2 Duo 1.83Ghz
400GB SATA2 Seagate 7200.10
Arctic Cooling Freezer
Audigy 2 ZS

Apple iMac Core 2 Duo 2Ghz 2GB Ram

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