Windows XP Pro Shut off

I have windows xp pro and all of a sudden one day it shut off.

I observed the following subsequently when I re started it

1. It would sometimes boot up to the log on screen and then either shut off or give me the blue screen with messages like "video driver has failed to initialise" or just a blue screen with message that if you are getting this message for the first time please check everything and restart.

2. I checked and ensured that all fans were working. The CPU, HD fan, Power supply fan. They were working fine.

3. I removed the memory (1G ) one piece and reinserted it.

4. I went into the BIOS and checked. I found that the CPU temperature ranged from 90 degrees Centigrade at the initial start going upto 103 degrees. I found this temperature to be extremely high.

5. I am running a Pentium 4Duo 3.2GHZ chip. and it was built only a couple of months back, so the system is pretty clean without any dust.

6.I removed the cooling fan, cleaned and applied new Arctic Silver 5 paste and reinstalled the fan. I reset the Bios/CMOS settings through the jumper.
Even after all this I notice that the temperature is still showing over 100 degrees centigrade in the Bios and if I try to allow it to boot.. it just shuts down once the windows logo shows up. The cooling fan is firmly set against the CPU.

7. The Heatsink does not seem to be hot when I touch it, so I wonder where the temperature of 100 degrees is coming from.

8. If there was something wrong with the motherboard, or software it would not bootup at all. I have a dual partition with XP loaded on the other partition also. With the assumption that the first XP Partition was having a problem I tried booting into the other partition, but I got the same errors of the system shutting off.

Would appreciate if any of you gurus could shed some light on this. Appreciate any help. Thanks

 

Which PSU u got in your Machine?? Also Provide full specs of your System.

 

Thanks for the response:

My system specs are as under:

Pentium Core 2 Duo on MSI P965 express chipset with 1GBDDR2 RAM.
Video Card is Radeon X300SE with 256MB Hypermemory and 128MB 64bit DDR.
RAM is 1GB DDR2.

My PSU is 450W from NCIX.

My CPU temperature showing in the Bios at startup itself is 90+ Centigrade and then starts moving up to 100+. The heatsink is slightly warm to touch.