Netman123, I will need to inform you that this motherboard has been out of support since June 2013. http://www.intel.com/support/motherboards/desktop/sb/CS-034322.htm
However, these are some recommendations you can try:
1. Take the system outside of the chassis. Make sure you disconnect all other components from the motherboard and take the product out in a non-conducted surface.
2. Clear the CMOS. The correct way is, while having all components disconnected from the motherboard, disconnect the BIOS jumper and remove the battery for about 15-20 minutes. http://www.intel.com/support/motherboards/desktop/sb/CS-028780.htm?wapkw=clear+cmos+battery#datetime
3. Since you are not able to use the keyboard to do a BIOS updated, I would recommend you to do a BIOS recovery. We would need to find out which is the current BIOS version. You can access the BIOS by changing the BIOS configuration jumper to position 2 and 3. This is going to take you to the BIOS maintenance mode.
4. This specific motherboard has 8 BIOS versions; you can download the BIO file and follow the BIOS recovery method. https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Desktop+Boards&ProductLine=Intel%C2%AE+945+Express+Chipset+Family+Boards&ProductProduct=Intel%C2%AE+Desktop+Board+D945GSEJT