i have two hard disks (C and F) I have C with my OS (win xp) and i am trying to install mandrake linux on F. I havent done anything yet except download the iso's - but now whenever i start my computer - it still starts to win xp, but after like 10 seconds of the welcome screen, the computer reboots itself. I left it on all last night to see if it would stop, but when i woke up, it was still in its process of rebooting. i have a feeling its something with my bios, but i dont know

How are the drives set up?
Master/slave?
Primary/secondary?
Can you get to your BIOS boot menu?
Have you tried removing the Linux drive to see if xp will boot?

here is a Linux specific forum

http://www.linuxquestions.org/questions/

just thinking outloud ...