Thinkpad 600x error 161?

My thinkpad 600x was working fine. Not knowing about the cmos/password shorting pads near the cmos batt and DIMM, i disconned the cmos battery to wipe the password. It now accepts a blank password entry, but gives me the 161 error and wont let me into the bios at all, in fact no keys work. I know what the code means, and my battery tested fine with 2.8volts. All i did was unplug it! WHO HERE KNOWS HOW TO FIX THIS??? I am not going to replace the motherboard, i KNOW it has no problems, but it is the only other fix the manual suggests, after replacing the cmos batt.