' ... take everything out of your computer case ... '
I do mean everything, PCI & AGP cards, motherboard, PSU, front panel etc, etc.
A good vacuum cleaner will get rid of most of the swarf. In difficult cases, use Sellotape, BlueTack, modelling clay, whatever you have to hand.
Best regards,
Pete W.
If you can keep your head when all about you are losing theirs - you haven't seen the latest Change Note!