Have seen other posts and got the same isue overheating caused to freez or get a weird output in video with a stuck sound only at first it kinda jump out of that and continue working but without sound there were a pop up that sayd nvidia driver sumthin i dont remember i went for the upgrade in drivers fingers crossed hoping that was all, got worse now it freezes and need to reboot even after repaste and cleaning of laptop ;(
All trouble is only when gt525 goes in for games, if i use only the integrated hdgraphics on cpu its allright that meens web and video playback or net-streaming