I used to own a Compaq Presario S3350Uk (p4 2.66ghz - I wanted to put the Compaq hard drive into an old Advent (p4 1.3ghz) and use this temporarily as my main system until I get a new PC. I thought this would be straight forward - set jumper on HD to Master and plug into existing Primary Master ide channel on Advent (which is where the old advent HD is/was, but when the PC is switched It boots past the bios F1,F2 phase then the screen stays black and doesnt do anything. ---- I've checked all the cables they're plugged in correctly as they work fine with the old Advent HD. The Compaq O/S was Win XP Home SP2 and the Advent HD is exactley the same. ---- Any idea on how I can use the old Compaq (which is a Maxor 80gb) with the Advent? Thanks!