HP G72

Hi, i have a G72 hp laptop with a dead gpu chip and a black screen of death. I had the gpu chip reflowed successfully a couple of months ago and now it is dead again cause it is temporary fix anyway. I've researched the internet for alternative fixes and i stumbled across on a video from youtube...

Guys... Whenever I start NFS rivals , it works quite fine till the tutorial ends but as soon as it gives me a command to start the race and i start it after some time the whole pc hangs and a message says " Get device removed error. The graphics device was removed...." other wise in other games...