EnPower CPU/WIn XP OS/New RAM Card

Anyone out there know how I can reset this CPU which is stuck in a Re-Boot Loop mode? I put a DDR RAM Card in this thing and monitor didn't work. Then I pulled the CMOS Battery and monitor worked but wouldn't go into Windows XP. Was told to access the CMOS Utility and change the date and time back to current. Did that, now I can't get the stupid thing to do a Normal Windows Re-boot! The options screen to choose Last Good Configuration comes up, but the software is blocked for some reason and won't allow me to choose Start Windows Normally or Last Good Config either! I've also tried every F-Key and combination of Delete, Insert, Escape and Enter and I can't access the BIOS Utility to change the RAM Size either! I'm ready to throw this $^^(@# thing in the dumpster!!!