I wonder how many computer users know that there is a battery inside their computer that needs to be replaced from time to time. When my computer started to have keyboard problems I did not think to check the battery since I had recently replaced it nor did I think to check the time. For some five minutes after switching on 45RTFGVB would not work. Then the PC refused to work at all and I did check the battery ? it had dropped to 0.5 volts! Replacing the battery brought my PC back to life but it had been without the battery for several days and now I have to rerun SETUP because it tells me that the CMOS settings are incorrect and I have to reset the date/time. Luckily I made a note of the original settings but the problem now is I cannot get the PC to store these values and I have to repeat the process each time I switch on. The CMOS messages say CMOS Settings Wrong, CMOS Checksum Bad, CMOS Display Type Wrong. I have a Direct Computers PC with an Intel Pentium II and MMX chipset. There is 128MB RAM and a 6GB Hard Disk. The offending battery is a 2032 3v Li and the BIOS is American Megatrends Inc AMIBIOS 1996 Release 02/05/1998 S Although I can use my PC, it is driving me nuts. I do not know how to restore the CMOS values that apparently affect the Display and Checksum. Please you help?