Solved PC shutdowns while playing games....

November 14, 2011 at 15:06:09
Specs: Windows 7
My PC shutdowns while playing games.Im playing League of legends and after the loading screen when i get in the map screen my pc instantly shutdowns.Its not BSoD or freeze,its a shutdown and after that i have to close the Power button from behind and re-open it so the PC opens up again.After the shutdown my pc boots and i can rejoin my game most times,but this will happen again and again when a game starts.I've tried Furmark/Everest tip for Overheating and thats not the problem.My mind goes to tired/faulty PSU.My PC is 4~ years old.Also i have some random shutdowns even if im not ingame but while using many programs but that happened like twice.

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November 14, 2011 at 15:39:47
If this is a desktop computer, if it has a video card installed in a slot,
- which video card model is it ?
- what is the (total max output) wattage capacity of your power supply ?

If the wattage capacity of the power supply is inadequate for the video chipset on the card's requirements, your power supply is being overloaded and will be damaged eventually, and you're more likely to have problems when you play a game when the load on it is higher.

Your power supply must have at least the minimum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD ! )
If that info is not in the ad for the video card, you can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.

If you're a gamer...
In most if not all cases, the max capacity rating of the PS is an intermittent rating. It's recommended that you do not load your PS to any more that 80% of that rating if you are going to be using something that puts a constant load on it, such as playing a recent game for hours on end. In that case, you multiply the min capacity stated for the system with the particular video chipset on the card by 1.25 to find the min. capacity of the PS you should have.

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November 14, 2011 at 16:33:54
Thanks for the fast reply.Althought i cant understand everything you said(im not British or American and my english aint that good).My GPU is Nvidia 9600 GT ,My PSU max output is at 405W.Even though im searching for the problem here i've already ordered a new PSU Corsair 600w GS(its made for gaming usage or thats what they say).I dont know how can i find out what chipset im using(if you are asking whats my chipset).So Tubesandwires i hope you can reply again in my post.Im really sad about this issue cause im far behind from my gaming schedule cause of this.Thanks in advance.

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November 14, 2011 at 18:40:34
✔ Best Answer
"Althought i cant understand everything you said(im not British or American and my english aint that good)."

What you've written is better than for many people who start a Topic (a.k.a. Discussion) here whose first language is English !

Use a free online translator if you need to.

Geforce 9600 GT

System requirements

There are two versions of the 9600 GT video chipset

- the original one - draws 96 watts

Minimum System Power Requirement (W) - 400 W
Supplementary Power Connectors - 6-pin

If your video card has a 6 pin power socket on
it, it has the original version

- the later version - draws 59 watts

Minimum System Power Requirement (W) - 300 W
Supplementary Power Connectors - (none)

You probably don't have the newer version.

Your present power supply - 405 watts - is just barely adequate if it is a decent power supply, but if it's an el-cheapo power supply, it's likely it can't actually handle the extra load of the video chipset properly.

"....i've already ordered a new PSU Corsair 600w GS(its made for gaming usage or thats what they say)."

That's a decent brand. When it's designed for gaming, the wattage rating is probably for continuous use rather than intermittent use, and the efficiency of the power supply may be as high as 85%.

This is what I usually supply....

Don't buy an el-cheapo (in quality) PS.
See response 3 in this:

I no longer recommend Cooler Master, AOpen, or Sparkle power supplies.
I'm now downgrading Thermaltake to middle of the road.
Antec has two lines of PSs - the better line has a longer warranty for the same or similar capacity - the other line is more towards middle of the road.
AMD has a list of Certified (tested and found to be good quality) PSs:

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