BIOS Updates forum

Hi everybody
It's my first post...After an overvoltage my computer, a fujitsu-siemens AMILO M1451 turned off...And now everytime I turn it on, the boot screen appears, but it stops there...I not even can reach the bios menu by hitting F-keys...It would seem a BIOS problem, maybe if I could re-flash the BIOS it could be solved...But this computer doesn't have a floppy drive (and I'm not sure it would boot from floppy anyway, since it doesn't even respond to key-hits)...
What can I do? My warranty expired more than 6 months ago...
Thanks for any answer

Update:
I've opened my notebook. I still can't find anywhere the name of the motherboard manufactor. The BIOS chip is an AMI, but since the computer stops at boot-strap screen, it doesn't display the string for the identification of the motherboard.
Anyway, on the label on the AMI chip is written:
686
AMIBIOS
NBEC@2000
BE19
7393

Special build for Fujitsu-Siemens, contact them.