Welcome to LQ
I'm going to move this to hardware, but wanna jump in with some questions to prep the hardware folks with
What kind of connection is it? What kind of modem/NIC? How is your mouse connected? Where is your modem located if you have one? Have you tried other configs like moving to a different PCI slot/COM slot?
Anything significant about controller cards (RAID..) or related?
Cool
Moving to Linux - Hardware