Hi: I have an old Gateway laptop computer M505...It has been sitting in a clostet, unused, for over two years. I did a full system recovery. I also purchased a new battery because the old one was DEAD. Would not even charge when AC was connected. I notice that every time I power the computer on, I get a loud beep and the black screen comes up with error messages. Error 0271:Check date and time settings...Warning 0251:System cmos checksum BAD-default configuration used...I thought that putting in and charging a new battery would correct this problem, but the incorrect time still persists. I have to correct it each time I power on the computer. I checked the Gateway website for my model M505, but I saw no mention of a cmos battery, nor where it may be located in case I need to replace it. I see batteries for sale on the internet that specify cmos for my computer, but why doesn't the Gateway website, nor the user manual, nor the support information make mention of the cmos battery. Please help, because this is a really nice computer but the clock issue is annoying me. I also noted that my history pages are not saved either. Only shows "Today's" history. Funny thing is, as long as I leave the ac connected, the computer powers on with the correct time...In the device manager, system cmos shows up as working properly. HELP
I just got the 
