On my Dell Studio 15 performance on many games slips after approx 5 mins of gameplay.. on Fallout 3 it is playable on medium settings for 5 minutes, after that frame rates become choppy and audio becomes extremely crackly. The graphics card is a Mobility Radeon 4570 Any help is appreciated!
Probably thermal management system. Don't use it on your lap ( use it on like a tea tray/desk or something)
When playing Fallout 3 i play on a desk, with good Ventilation, i also mount the rear of the laptop up on books to give better ventilation..
Try clearing it out of dust, by either blowing it or opening the laptop up getting a can of compressed air and cleaning it out that way.
Send it to a shop where they'll do it then. Or just blow a can of compressed air into the vents without opening the laptop
just to update, i completely stripped it down to the heatsync, blew all the dust out, and it's as if i have a brand new laptop :O
http://www.google.co.uk/products/catalog?ds=pr&pq=laptop+desk+fans&hl=en&sugexp=kjrmc&cp=11&gs_id=1u&xhr=t&q=laptop+cooling&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1680&bih=882&wrapid=tljp131918709941336&um=1&ie=UTF-8&tbm=shop&cid=2019103170749009722&sa=X&ei=jjKhTsnbIYGWhQfEzNj5BA&sqi=2&ved=0CIUBEPMCMAE#I had a old dell inspiron 9400 that had a simular story with playing games my solution was i bought one of these (see link) and i was surprised just how much better the entire system performed after i think it was mainly because the ram was right where the fan was.Hope it will at least assist you with your GPU problems.Also may be worth going for a more expensive one this was usb powered, suggest a wall socket one 12v fan Is the bottom of your laptop often really hot? Sound like a heating problem to me Graphic card on laptops often cook them selfs to death. Let us know how you get on dude.
