Computer shutting down

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arun_7

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Jan 25, 2013
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Hello,
I have a ~10 month old nvidia gts 450 card.
My psu is 450w and around 3 years old.
I had no issues with my previous graphic card. First 6 months with the gts 450 was fine. But for a couple of months now, whenever i play a game, the computer just restarts after about 15~20 mins? I'm not sure if the problem is with my GPU or PSU.
Please help. Thanks

My specs are:
intel core2duo e7500 at 2.93Ghz
intel dg41rq mobo
2 1 gb ddr2 ram
Nvidia gts 450 card
Zebronics PSU 450W
 
Solution
Does is restart or shut down? If it is shutting down, this usually indicates a head issue and/or power issue. If it is restarting, it could be either drivers, software or hardware issues.

Assuming it is a restart, the first thing to check is that all of your drivers are up to date, all updates have been installed and perform a virus/malware check.

Next, check your event viewer (click start, then type "event viewer" in the search box). Read through the log files to see if any critical issues, errors or warnings have occurred recently.
Does is restart or shut down? If it is shutting down, this usually indicates a head issue and/or power issue. If it is restarting, it could be either drivers, software or hardware issues.

Assuming it is a restart, the first thing to check is that all of your drivers are up to date, all updates have been installed and perform a virus/malware check.

Next, check your event viewer (click start, then type "event viewer" in the search box). Read through the log files to see if any critical issues, errors or warnings have occurred recently.
 
Solution
Hit the Windows key and type in 'View Reliability History' and review the red X's. Or go to computer management and you can view error logs: Computer Management > System Tools > Windows Logs. Look in System Logs and Application logs. You may get a good idea from there.

If your system has the latest drivers installed than I'm betting it's the PSU.
 
Does is restart or shut down?
It restarts.
the first thing to check is that all of your drivers are up to date, all updates have been installed and perform a virus/malware check.
I updated my graphics drivers about 15 days ago. The problem occurred before and is occurring also after the update. Scanned for viruses, it is clean.
check your event viewer
There are about a dozen critical events. nearly all of them are Event ID 41, kernal power
 

CPU temp levels are in mid 40s or low 50Cs. GPU reaches high 70Cs. But nvidia says the GPU temp limit is 100C. This temps should not be a problem, right? I'm also looking for a new PSU. Before that, i want to be sure the problem is with PSU and not anything else.
 

The error that i get is "Kernal Power. Event 41."
By drivers you mean GPU drivers, right? I downloaded them from nVidia site.
 
Event ID 41 is related to events such as a 100% power failure causing restart. Usually, if you have other hardware issues, you will get Windows failures with details indicating what happened (codes like 0x00000050, 0x00000024, etc)

This could be the result of the power supply not providing enough power, resetting, etc., and the result is the computer is restarted. If you have a spare PSU, try testing with that....
 

I opened device manager. right clicked "NVIDIA GeForce GTS 450" and selected "update driver software". They were up-to-date.
I don't have another PSU to try. But i don't mind buying one if it is clear that it is the problem.
 

I dont have a spare PSU. I'm thinking of buying one now. In case you want to know, i actually use an UPS for backup. Any chance that the UPS could be under-supplying? I think this is silly, but just wanted to rule out the possibility.
 
Try removing the UPS and running without it. If the battery in the UPS is failing, it can provide inconsistent power to the computer. If removing it doesn't help, I would suggest trying the PSU.

There is never a 100% way of verifying what the problem is without replacing the hardware and testing with the new hardware installed. You can make good educated "guesses" - but nothing is 100% certain. Even when smoke pours out of the power supply, it could be caused by other hardware failures within the computer (smoke pouring out is an almost 100% identifier of bad hardware....LOL).
 

This is apparently thier best
http://www.zebronics.com/products/gold-series/zeb-450w-t-sata-plus
It's absolute crap, in the real world ( where systems rely on the 12v rail and psu's no longer have a -5v rail ) 16 amps is the equivalent of a 250 watt psu

 

Should i choose a PSU that supplies more than 450W? I just checked the prices for 500W psu. They are around INR4000. Do you have any cheaper options? (1USD~55INR)
 

Thanks for the suggestion, will try it and tell you.
 

Help me choose between these:
-Cooler Master Thunder 500W
-Cooler Master Extreme II 525W
-Seasonic ECO 500W
-Corsair CMPSU 500CX 500W (this is the one you suggested)
 

Both seasonic and corsair have one +12v rail for motherboard. My GPU should be connected to two 4-pin molex connectors. So, i just plug them into the +5V rails? And, how to find out which wires carry which voltage?
 
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