Have had no problems ever with pc. Did a normal shut-down yesterday and when I tried to power up, the fan comes on immediately (sounds faster and louder than what I remember???) and it starts beeping a short, steady 3 times...beep, beep, beep...STOP... beep, beep, beep, etc. That is all I can get it to do. Nothing shows on the monitor. I've tried to find some info, but not that tech savy to begin with and i'm dealing with chemo brain fuzz which doesn't help. Any ideas on what to do would be much appreciated.