I have at one SONY VAIO Laptop GRV-550 with PIV, 512 MB and 16" SXGA. Have One and Half year with this Laptop but the last two weeks When I am running Hard Applications like Photoshop, P2P, AutoCad, I hear that Fan start tu run more fast and the Laptop Turn On....Don't know if is a HDD , MotherBoard or Software problem ???

Thank you,