In my laptop(DELLL XPSM 1210) thermal pad between the heatsink and Processor melted and I think now Processor and heatsink are touching each other. Because of this is there any chnace to damage the Processor. My laptop is now not booting. POST (Power on self test) failed and numeric key LED is blinking. When I called to DELL, they said it could be processor problem? Can some one suggest what could be the problem.

The thermal pad is supposed to melt. What made you rip your laptop apart to begin with?

Suddenly my laptop is not working, not booting at all. The previous day its working fine, I shutdown and next day morning when I power ON, it is not booting. When I ran POST(power on self test) test the numeric key pad (9) is blinking. I opened my laptop and saw that Thermal pad(paste) between Intel processor and heat sink is melted completly. Do I need to replace it? If I replace it does my laptop works? or if any one know about numeric key pad (9) is blinking problem in DELL XPS M1210 model please let me know.

If you feel comfortable doing it, I'd remove the heat sink. Using alcohol, I'd take a swab and carefully remove the old paste/pad from the heat sink, and then do the same to the CPU. Be careful to ensure the old thermal material isn't spread all over the place or has run down into the CPU pins etc. Buy some Arctic Silver or other quality thermal paste and spread a light coat on the CPU (don't take it all the way to the edges, leave a border). Reinstall the heat sink keeping even pressure on it and re-attach.

"I opened my laptop and saw that Thermal pad(paste) between Intel processor and heat sink is melted completly" How would you know that without removing the heatsink? As I stated above, the pad is supposed to melt...that's what it's designed to do. Pads are generally made from paraffin wax. When the CPU get's hot, the wax melts & spreads out, filling in all the microscopic irregularities in the two surfaces. If you removed the heatsink, you have no choice but to thoroughly clean the mating surfaces of all traces of the pad, then apply a tiny dab of paste approx the size of a grain of rice. It should NOT be spread around...just let it sit on the CPU core. When you lockdown the heatsink, the paste will spread out to fill in the gaps.