at first thought i figured it might be the battery also but i ruled it out since its always a 6min lost and the comp isn't that old to have drained a battery, atleast i hope not.
First, just get a new battery. Even if it isn't that old, you don't know what kinda battery they put on that sucker. Plus, it's not like that cost that much anyways.
If that doesn't work, then maybe it's a BIOS problem and you need to update it. Did you buy that computer, or build it? If you bought it, then...wait, I was gonna say contact tech support, but it isn't always pleasant. I say that because I just happen to call Circuit City tech support on my crappy 4-yr old computer, cuz it was still amazingly covered under their warranty, and they're gonna upgrade the motherboard, CPU, and power supply
<A HREF="http://www.anandtech.com/mysystemrig.html?rigid=13406" target="_new">My System Rig</A>