So I have got a laptop - model HP 430 Config: Intel Pentium Dual Core B960 2.2 GHz Sandy Bridge 3 GB DDR 3 RAM 1333 MHz 500 GB HDD and all..... The problem is every 4 months or so the laptop faces thermal shutdown until I take apart and service the whole unit(replace thermal paste and clean the heatsink and fan). After around 4 months again, it is back again. The laptop is given by our college and everyone has the same problem except for them- they don't know how to service one. So is there any tip from you guys to prevent the recurrence of this thermal event again and again?