This is an Extended CMOS RAM problem, check your motherboard battery, and motherboard.

Beeping normally means either memory or video card issues. There are different beep codes dependent on your motherboard and BIOS. I would start with either or both to help resolve your situation. You can go to this site to help decypher the beep codes. http://pcsupport.about.com/od/nonworkingcomponent/ht/beepcodestb.htm