Ok, so i have a XPS L502x that is having issues when I'm using my dedicated graphics card (Nvidia Geforce GT 540m) to run games such as Skyrim, League of legends, Spore, and Fallout. While playing these games using my GPU my computer will either freeze and making a buzzing sound through the speakers that requires a hard shutdown or black out and restart. Most things (and some games) I can get away with using just my integrated card and have no issues, but i got this computer for the gpu and really want to play more demanding games (ie: skyrim) that my integrated card cant handle. This issue only shows up while playing games. I have already tried cleaning with air, running dell diagnostics tests, and updating all the BIOS/drivers. Anyone know any fixes i can try? Or should I look into replacing a piece of hardware since I don't want to buy a new computer? My computer is not under warranty anymore.
could it be overheating? If so what can I do to prevent that? I have tried lowering the graphics settings on games to help with that, but the solution is always only temporary.
Specs
Nvidia Geforce GT 540m
i7 2630QM
6GB Ram
64bit windows 7