Computer Lockup Question

[MusicallyInspired]

My father has been having this problem for a year now. His computer will just freeze up randomly (no mouse, Ctrl+Alt+Del or anything). We then discovered it semed to happen whenever Flash was being shown in a browser or in his Flash creating program. He recently thought it might be his cordless optical mouse. But it still froze. He then discovered he had 4 things on the same IRQ (including his video card) and two of them were unknown multimedia and video controllers. They turned out to be an ATI TV-Wonder capture card and when we removed it they went away. He deleted his device driver and reset the computer and it installed again and still it freezes. I think the fourth thing on the same IRQ was a USB controller or something. But it doesn't say its conflicting and I don't think that has anything to do with viewing Flash.

He has a nVidia Vanta LT. 1Ghz computer (not sure how much RAM). Anyone have any thoughts?

[Tom]

What operating system?

IRQ conflicts used to really be a PC-stopping event on my last Win98SE PC, and I found my SCSI drivers were typically at fault.  Haven't seen any complete freeze-ups since going to WinXP...

[MusicallyInspired]

Sorry, Windows XP Home. SP2 I believe. I can't be certain of anything else as I never use his computer.

[Laust]

NT/2K/XP has no problems wiith IRQ sharing. Win 9x on the other hand, did.

[MusicallyInspired]

He's decided he's going to take it in to get fixed. I'd rather fix the problem myself but he thinks its too much trouble. I'm surprised he's not going all out to fix it himself. He used to be like that. Guess he's getting to the place where he just doesn't want to bother with stuff anymore lol.