Error at startup?

Question

Keep getting the following message on my startup screen:-CMOS CHECKSUM ERROR-DEFAULTS LOADED.Also the clock goes back to 01012002. I,ve changed the button battery so thats not the problem! Any ideas please.

Answer 1

This issue is caused when the CMOS values are incorrect. This issue can occur because of any of the below possibilities.

Bad or old CMOS battery.
BIOS update.
Disconnecting power from computer without shutting down computer

Solution:

Bad or old CMOS battery

Attempt to reboot the computer. If error still occurs after rebooting the computer enter CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and/or changed make sure you save and exit CMOS setup.

If you have a Phoenix BIOS and have an option for 'Reset Configuration Data', set this value to 'Yes' and save and exit the CMOS.

Note: If this issue continues to occur after you turn off your computer off it is possible that the CMOS battery may be failing or already bad. Before considering replacing the CMOS battery try leaving your computer on for several days. Additional information about replacing the CMOS battery can be found on document CH000239.

Computer improperly turned off

If the computer was had the power disconnected while it was still running it is possible this could cause the CMOS to become corrupt. Ensure that the computer is ready to be shut off before turning off the computer. If you have a laptop computer ensure that the battery is charged before disconnecting the power connection.

If the CMOS values have become corrupted entering the values in CMOS setup and saving and exiting CMOS should resolve your issues. Additional information about entering the BIOS setup can be found on document CH000192.

BIOS update recently performed

If you've recently ran a BIOS update on the computer the values stored in CMOS may have been reset. Enter CMOS setup and re-enter all the appropriate values. Additional information about entering the BIOS setup can be found on document CH000192.

If you're unable to enter the BIOS setup or after running a BIOS update your computer no longer keeps its values the incorrect BIOS update may have been installed for your computer or the version downloaded may be corrupt. We suggest trying to update the BIOS again and/or reverting back to an earlier version

Answer 2

No don't re-install Windows, it'll take an age and a half. First off, your details lack slightly more - detail. It would be nice to know what that file relates to, because I can't see it on any list ANYWHERE. I've googled it, I've visited forums, some more well established than others, and I'm still scratching my head trying to figure out where that file comes from, or what program launched within windows requires it to run. Evidently you're able to get into Windows, because otherwise that wouldn't come up at all. It doesn't point to a Windows specific system file - such as those you would normally find sitting in a Windows 'system' directory. Does that dll file actually even exist because it's not even coming up on any lists anywhere? It's sat in a temporary directory, so it could have been deleted, and if it's in a temporary directory, it doesn't really indicate that it's a severe problem, just a slight annoyance. I would check you startup items in msconfig (just go to 'run' on your start menu and type in msconfig - or your search programs text box if you have Vista or 7). There has to be something in the startup tab that requires that to run. Essentially you're going to have to go by trial and error, selecting to turn off either one or more startup entries that you're unsure of (one at a time is usually best), and go through it that way, resetting the computer when you're done, or just logging off and then logging back in again. I do have to admit I'm not in the least bit familiar with that dll file, but it's evidently belonging to something you've either installed, and removed incorrectly, or it's just some kind of software fault with the program you're trying to run at startup. As I'm not sure if you typed the dll file name correctly, I even tried other possibilities but it still came up blank. Sorry, best I can do.

Answer 3

well, make sure that the CMOS battery are intact. Based on my experience, when you change or remove that cmos battery, normally when the pc turns on, it displays that message.. I only press the "restart" button and after that you will never see again that message.. and press to enter in BIOS Set-up and change the date and time.

Answer 4

Simple replace the motherboard, case solved. The CMOS is corupted and they are hard to replace ..

Answer 5

your cmos battery is dead unplug the pc and pull the battey radio shack sells them for about 3.50 replace it and reset time and date

Answer 6

Virus or failing power supply?