MY pc keeps restarting about every hour or so .. it gives me that big blue screen error. then it : 1. Either hangs on the blue screen error 2. OR hangs on the a8NE screen 3. OR gives a boot error [which it also gives when i restart.i always have to manually select my bootdisk. editing the bios boot prority and hdd boot priority does not help. it reverts every time. i have 1 OS. XP Prof SP2] 4.Monitor light turns orange and nothing happens. I have to take out 1 piece of RAM and put it back and then it wrks ..... HELP!!!