CMOS checksum error?

[jar5tyle]

I just got some new parts for my PC, and I'm having a little trouble...

I have a Leadtek Winfast K7 NCR18D Pro nforce 2 motherboard

Just after POSTing, I get a "CMOS checksum error" and I have to press F1 to resume... my cmos jumper is in the default position

Also, when I choose 166 FSB in my BIOS and save, it goes back to 100... Again, my FSB jumper is in the default postion which says "133/166/200". I'm assuming that means I can change it to whatever in the BIOS?

any idea what's causing this?
Any help would be appreciated, thanks

 

[fredtam]

F1 sets it to default values. Remove the battery for a faw minutes and put it back. If that doesn't work replace the battery.

 

[Twista]

Originally posted by: fredtam
F1 sets it to default values. Remove the battery for a faw minutes and put it back. If that doesn't work replace the battery.

nice sytem fred

 

[Duvie]

I have seen this a dozen or more times and it usually has been associated with my ecs k7s5a mobos and bad cmos batteries...simple trip to radio shack and 2bucks or less should solve that....

If that doesn't work then get a bios update for the board and flash it to the latest bios as posted on the manufacturers webpage...

 

[stscott]

Check this:

I did a repair on a PC that had the same error message, "CMOS Checksum Error: Defaults Loaded". So I tried a lot of what you guys are suggesting, including replacing the battery, but to no avail. Guess what it was? The owner had just relocated his PC to another room in his house...

I looked back where the keyboard was plugged in...THE KEYBOARD WAS PLUGGED INTO THE MOUSE PORT (the mouse port was unoccupied as they have a USB mouse). AND THAT FIXED IT!!!

After that, I also had to go into the BIOS and allow USB use because it had been reset "disallow USB" somehow.

Scott