ok so, i just turned off pagefile for my old XP desktop because i have 2GB of ram and i hardly see it get above 1GB. rebooted my PC and i hear a high pitch noise from what i think is the HDD (not entirely sure though) and my CPU fan is making a weird noise. as soon as i hit the desktop my PC shutdown and then made it to the boot screen then shut down again. now i cant get past post. need big help.