CMOS Checksum Error
 

Hi all.

My computer has crashed and is now displaying "CMOS Checksum Error: Defaults Loaded", at start-up. It's giving me the option to press F1 to Continue or Delete to enter set-up. Only problem, is that there is no response when I press either of these (PS2 Connection, not USB).

I have tried swtiching the jumpers, replaced the battery, removed all cables and cleared my fans out, yet nothing. I have also tried my motherboards' recovery disk in which should be bootable and still there is no response. The computer has worked faithfully for over 18 months now, and I haven't updated the BIOS or upgraded the system recently.

I have been told that it could be the RAM that needs replacing, but would rather have a professional opinion before spending ;)

Cheers Guys, really appreciated!

System:
Asus M2N4-SLI
AMD Athlon 64 X2 4200
1x 1Gb DDR2-533
1x 120gb HDD (With OS)
1x 500gb HDD
Asus 256mb GeForce 7300

Usually its a battery problem when that happens or after a cmos flash. If its not sticking with a new battery then the actual CMOS chip must be about to go.

Actually have you been into the bios and saved the settings yet?

He can´t if he has no keyboard response : /

Which by the way, you didn´t mention if you had tried another keyboard, have you?

there's also the possibility the jumper for cmos reset on the board is set to reset.. that would cause this sort of thing too...

Yes have tried a new battery, with no luck.

Also tried a different keyboard, again with a ps2 connection and still no response! :mad:

There was a disk that came with the motherboard which has a copy of the BIOS on, but that wont even boot-up (which the manual says it should do).

If you got that advice, why not borrow a compatible RAM module from your friends for testing purposes?

Good point tippex, can you check this themonkey?

Jumpers set back to normal =/

Ill try borrowing a friend RAM to see if it is that, providing its compatable lol.

Hopefully it is the RAM, but even so, I still have a 3 year warranty with Asus for the Mobo, so it aint all bad.

Tried new RAM and no change unfortunately.

I went to a compuer shop and they asked if I had patched a game recently, which i have. Could this be the problem and is there any fix?

i really doubt patching a game would cause this... access to the cmos/bios in windows is quite restrictive and not exactly 'generic'... that, and resetting the bios, and rebooting should show a change... the problem is (unfortunately) much deeper than that i think

As a last thing you can flash the bios and put either the same version or see if there´s any updates, but i think that voids your warantee so prob not a good idea.

I had prob like this my keyboard on my old tower went to sleep mode

I removed the battery some hours and that fixed the problem

But if your problem remains. Indeed looks more in deeper.

Looks could be your motherboard or powersupply