My laptop which was working fine decided to print cannot find operating system. The laptop battery is dead in the HP but being powered by electricity. This is a 2003 HP Pavilion ZE5185. I can get to the setup screen by starting and hitting F2. Can anyone get this thing running or help? Would the Cmos battery or bios battery cause this and if so where would it be. Please email me with help ron222@embarqmail.com Thanks Ron