I think I killed NEC-6100A

I have Dell's 6100A (104 firmware I think)

I wanted to flash it with 6500 modded bios to make it write - DVD media
http://www.micheldeboer.nl/firmware/6500.html

First I flashed it with 224 Liggy, it worked but Nero was giving me an error "write at once" or something like that.

after that I flashed it with the original, went back to 104

and then flashed it with Liggy 4.24

Now when I boot up my laptop, it says the device is unknown or cannot be identified. And I can't get past bios. The only thing I can do after that is to shut down. I have to take out the drive for the laptop to boot up.


Is it dead? is there nothing I can do about it? some bios tools or something?

Can I insert the cdrom while the laptop is on???