cleared nvram

I have a packard bell imedia 6300 with a florida motherboard. I accidentally cleared the nvram while adjusting the bios following installation of an updated bios. now although its still working, its much slower and when I tried to remaster using its master discs, I get the message "this computer has no valid information"
does anybody know how to reconfigure the nvram which stores all its component make up,motherboard type,processor, serial number etc ??