Strange performance drop on M1530

Hello,

I've had my M1530 for 6 months and so far i don't have any major problems. But today I notieced sth strange: after some time of gamieng (HL2) - 30min - 1.5h. The game freezes for couple of seconds and the performace drops (in HL2 from 45 fps to 21-22 fps). The only way to make it work properly again is to reboot the system , then it works OK. I notieced that aftrer that freeze the GPU core frequency drops form default 475 MHz to 265MHz, and memory clock from 700 to 300. The laptop doesn't change the freguency to higher one during gaming untill i reboot the PC, tehn it all gets right. The GPU does not overheat. The temp mesuered by few programs (HWMonitor, GPU-Z, etc) is not very high. During the drop it is never higher than 80C (usually 7x), the CPU temp is also around 70 during gameing. I'm wandering if it could be caused by outdated drivers (176.44, the pack from dell website), and A08 BIOS. Is it possible to be the symptopm of failing GPU ( well known NVIDIA G84 and G86 problems) ?

I'd be grateful for your aswer.

 

Anyone here ?

 

Replace the drivers . Nividia now stocks laptop drivers .Or you can go to laptopvideotogo.com