Cmos checksum error f1 tu run setup f2 tu load default, al elegir f2 el carga el sistema operativo pero el puerto paralelo desabilitado
Clear cmos.
SOURCE: Want bootup says checksum bad
Usually, the message you are seeing is displayed when your CMOS loses power abnormally. Even when your computer is turned off, there should always be a low-level charge from the battery, keeping track of your PC's clock, and storing information about your BIOS settings.
If the CMOS battery is dying, it will produce a weaker charge, or continuously start and stop providing power, which will trigger that message. as a result, you are losing all your BIOS settings that you are configuring each and every time, and getting that message when it happens.
It's odd that you would be getting that message when you replaced the battery, but I'd try replacing it with another one just to be sure. If it doesn't fix the problem, the motherboard may need to be replaced. In this case, the problem could lie with wireing between the casing and the chip, or even be in the chip on the circuit board itself.
You could also try flashing the motherboard, but only use that as a last resort- you could finish toasting it. Also, I can't guarantee it would fix it in the future, as all you're doing is adressing the symptoms, and forgetting about the cause.
SOURCE: CMOS Checksum Bad message
If you have another computer download the previous BIOS update of version 3.0 and see if that works.
SOURCE: cmos checksum error defaults loaded
Make sure the battery your using is brand new. If it is then go ahead and get into the Bios and make sure the date and time is set properly. Once you do that then go ahead and save the changes and exit.
After this go ahead and see if the CMOS exit checksum defaults comes up if not then go ahead and turn off the computer and unplug it. Then after about 5 minutues plug the computer back up and turn it on and if the message doesn't come up then its resolved.
If the cmos checksum error comes back up then try a brand new battery, should be a 2032 battery and then go thru the same steps in setting the date and time and save changes and exit and if the message doesn't come back then unplug the system again and leave it unplugged for 5 minutes. Now plug it back up and if the message stays away the problem is resolved. it the message comes back then that means the motherboard isn't reconizing the batteries and the motherboard would need to be replaced.
336 views
Usually answered in minutes!
×