Hangs during post? My dad's machine does that with his USB flash reader. My old Abit wouldn't when I had my external floppy connected. It's probably a flaw in the BIOS... You could try flashing the bios, but the safest thing would be to deal with it.
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Primary- i7 920 | 6GB RAM | 9800GT | 160+160+500GB
Secondary- Athlon X2 4200 | 2GB RAM | 7600GT | 80+250GB
Netbook - Atom N280 | 2GB RAM | GMA945| 160GB
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