I have a Compaq C752 TU (C2D 1.6 GHz, 2 GB RAM, 160 GB SATA (Toshiba), Intel GM 3100, Windows 7 Home Premium, 1.5 years old)... The problem started a week back with system freezing abruptly and requiring a Restart... the Fan would rev up and become really noisy and the part below where RAM &...