Vista 64bit Crashing

[Tumps]

My brothers PC has start to BSOD and so i tried to load the System Repair by placing the Vista disc and restarting the PC but when I did this it first froze, the i hit reset and tried again and this time i got a BSOD with

STOP: c000021a {Fatal System Error}

The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000221 0x00100390).

The system has been shut down.

Any clues on a simple(ish) fix.... or what's cuasing it??....

I will of cause try to provide all the Info you need

Thanks in Advanced for any help

[Sp0iLedBrAt]

See this link and this link, it may help

Edited March 5, 2010 by Sp0iLedBrAt

[Tumps]

Thank will look into those

Whilst he was trying to back-up his files he got this BSOD

[cluberti]

Please note that unlike most cases where people blame bugchecks on bad memory and are incorrect, these actually *are* potential memory failure bugchecks, so you may actually have bad RAM in the system. I'd be checking that, because all of the bugcheck codes you've shown (c21a/4e) happen when a memory location lookup fails, either due to a faulty pointer or a page fault during a non-paged operation. Given it failed in Windows *and* when booting from a (very) minimal Windows PE boot disc, this is at least one scenario where I would test memory. Again, it's possible the RAM is fine and your bugchecks are just coincidence, but the likelihood of that is fairly slim.