Hi, i recently got an old comp from a family member as mine had gave in a while ago and they didnt need this one. But once i turnt it on it would just come up and say "cmos checksum bad" and "cmos date/time not set" eo i tried to reset the bios and cmos by removing the battery for a good while and also moving the little hit of plastic over the clrcmos pins, but since i have done that my keyboard and mouse wont respond at all. Ps/2 keyboard and mouse and they where fine up until this point. Dont know what to do, any and all help is greatly appreciated, thank you very much in advance. I do believe its onboard graphics etc.