Hello everyone..I have a problem with my PC,its a fairly new one,it used to run all the games just fine at high/very high(depending on game req.),but a month ago,a problem appeared.Whenever i play game,doesnt matter which one,it runs fine for like 10 mins,and then starts lagging for like 6-7 seconds ,the frames drop drastically ,then goes back to normal,then in a few mins lags again,and again back to normal,which makes the games very unplayable.I thought that i have a problem with the refresh rate so i changed it from 75 to 60/59,but the problem didn't go away..I reinstalled windows,now it has barely any software,and the only software i have installed now is anti virus (Nod 32),V-tune and windows live messenger,but it still continues to lag.Can anyone give me a solution ,cause it's really startin to piss me off,and i dont wanna buy a new pc ,since this one is fairly new,only 5-6 months old,and i dont believe there is something wrong with the graphic card and ram ,i have the newest nvidia drivers installed for the 9800 GT,i have 2 gb ram,and its a pitty to ruin my gaming like this.. Thanks in advance Best regards

Is your graphics card's heat sink full of dust? It may be overheating and dropping back to a much lower acceleration to cool off. "Doin' right ain't got no end." Cap'n Red Legs

I agree with leroi, sounds like a heat issue.

I opened the pc today,and the graphic card had no dust on it at all...

The dust is going to be inside the thing. If it's one of those with the cover over the heat sink, you may have to remove the cover to clean it. I doubt that you can see inside the thing with the cover on and that's where the heat sink and fan reside. I was shopping for an easy to clean card when I bought my new graphics card, found this one: Newegg.com - ASUS EN9800GTX+ DK/HTDI/512M GeForce 9800 GTX+ Very pleased with its' performance and the ability to blow the dust out with canned air easily. Great looking card too, but that's not really important to me. "Doin' right ain't got no end." Cap'n Red Legs

It doesnt have any cover,and its dust-free,i personally cleaned it today,but it didnt help me..

Card must have gone bad or something, try it in a different computer or a different card in yours, if you can. "Doin' right ain't got no end." Cap'n Red Legs