When you flash a BIOS, you get an option to save the old (original) one. One should always accept this option just in case something goes wrong. If you did save the original, simply run the flash program again, but use the original BIOS file. By the way, why did you upgrade the BIOS in the first place? One should never flash a BIOS unless there's a good reason to do so - to fix a specific problem or upgrade considerations, for example.
If you didn't save the original BIOS, do two things. First, go sit in the corner for 30 minutes and think about the goof you made. Second, you should be able to get the original version of the BIOS from the Toshiba (or some other) Web site. Be aware of the different versions, the different dates, and find the one that was originally installed.
It could be that the new BIOS doesn't want to play nice with the older Windows 95, so another possible fix would be to install a newer operating system - Windows 2000, for example. Of course, you may need to upgrade the RAM in your laptop from the original 64MB to the maximum 256MB, and I believe you probably have a 10GB hard drive, which is minimally acceptable.
(By the way, there's been a lot of "discussion" lately about technical questions beingposted in the discussion forum instead of the Q&A forum. This is probably more suitable for the Q&A, and you'd probably get a lot more feedback.)
