Bootup problem

Hi,

I have problem in starting my my Windows XP Media Center. After the Dell and Windows XP flash screens, I get a blue screen and the systems turns off. I tried the following options to trouble shoot.

Option 1:
Pressed F8 during startup time and tried to login in Safe mode. No luck

Option 2:
Pressed F8 during startup time and tried to login in Safe mode with command prompt.

This time I got the following error message in a blue screen

Stop c000021a {Fatal System Error}
The session Manager Initialization system process terminated unexpectedly with a status of 0xc0000189

Option 3: Used Dell restore option by pressing <Cntl> F11 to reinstall to restore the system.

With this option, system restore went fine. But as part of the restore process when the system tried to reboot, I end up with the same problem (i.e., after the splsh screens, I get the blue screen and system shuts down)

Question: How do I overcome this problem? Whast are the options I have?

I ran diagonstics and got the following errors

Error Code 4600:021E
Msg: Process CPU Internal Temperature - Critical

Error Code 3900:0626
Msg: Temperature sendor out of range, temp=255C, min=10C, max=100C

Error Code 3700:011B
Msg: Expected Processor Fan on low RPM of 2500. Detected fan RPM = 5070

Brahma