My friend gave me a computer last week to look at and I'm just now checking it out. It's a laptop. When I pressed the power button it would blink an amber color but never post. After taking out the CMOS battery it now POSTs but won't boot into Windows XP (even though the XP screen pops up). When I go to reinstall the operating system it claims that there is no hard drive. However, in the PhoenixBIOS setup utility I can do a diagnostics test (Primary Hard Disk Self Test) and the hard drive passes. Anyone have any idea what's going on?