If the answer above does not resolve your problem check your RAm chips, especially if you have recently added RAM. If you ahve more than one RAM chip and they are not the same parity they will cause problems, also if one of chips on the RAM stick isgoing faulty it will often give an incorrect parity response and simulate the same problem. this can be checked by swapping RAm from another source and seeing if the problem goes away.
BTW once you get running properly check your system boot setting in Windows and uncheck the box beside the instruction "auto reboot on error"
this will allow it to continue openeing with minor problems.