my pc restarts continuosly during the bootup . i also checked the cpu temperature it was around 100 degree celcius also my pc is around 6 yrs old with 3.5gb ram and pentium D processor
If it still has the original Intel push-pin HSF, you are likely due for a HSF upgrade... the HSF is no longer making adequate contact with the CPU. Nearly all Intel push-pin HSFs have this problem after 3-4 years of moderate use.