My Compaq 2500 (2538CL) laptop will not boot. The first error message that appears says a hard drive failure is imminent, press F1 to continue. I press F1 and then a message appears saying media test failure, then operating system not found. I have tried wiping the hard drive using the recovery CDs. However, I can't even get through the first CD...it throws some sort of error and ejects the CD. I have tried to run a hard drive test. HP's site says to turn on the laptop and hold down the F10 key to enter BIOS, but this doen't work. I have tried removing the battery and the AC cord but this hasn't made a difference. Also, sometimes it makes a horrific sound like a woman screaming if this helps the description at all. I'm about to take a sledgehammer to it. Any advice?