HELP! Roadhog BIOS error during show

After 5 hours of use with my , problem free, up-to-date Roadhog it crashed & restarted to this:
RV370 BIOS P/N 113-A25915-101
Boot Block Compatible Version Ver.004
Bad BIOS checksum. Starting BIOS Recovery...
Checking for floppy...
Floppy not found!
Checking for CD-ROM...
CD-ROM not found!

over and over

Any ideas? Have another show in 4hours
Thank you
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