Hey Guys, I'm badly and urgently in need of help. I just "sanitized" the hard disk of my HP Compaq 6720s laptop and now I can't boot up. The process starts and after "initiating and establishing link", it says "PXE-61: Media test failure, check cable", PXE-MOF: exiting Intel boot agent" then it goes to "Non-System disk or disk error, replace and strike any key when ready". I tried booting from CD cuz I wanted to change OS but when it gets towards the end it says "acpi.sys damaged" then asks me to strike any key to restart computer. I'm at a loss about what to do! Please guys I really need this laptop functioning especially this week. Somebody HELP!!