i updated my windows xp pro the other day and it made my system crash. here is the error message it gave: Stop: c000021a (fatal system error) Logon process system process terminated unexpectedly with a status of 0xc0000034 (0x000000000x00000000) the system has shut down. I have tried everything to get it corrected. can someone help please. I have tried to everything. can i download windows exp back onto the computer and if so how? Thank you.1 person needs an answerI do too