My A8V deluxe motherboard is now saying CMOS Checksum Bad

[blackstealth007]

My computer after I set Bios, will lose all info. It keeps saying on the american megatrends logo "CMOS checksum Bad, Press F1 to run Setup, Press F2 to load default values and continue". Do I need to flash it again?

 

[blackstealth007]

It also does not retain data. After exiting bios the screen will go of.

 

[blackstealth007]

anyone ever had this happen so they can help me? My specs are Asus A8V deluxe socket 939 and AMD 3000 ( I also have the 3400)

 

[GuitarDaddy]

Sounds like you need to reflash the bios. And also sounds like you might have a dead CMOS battery (they are cheap, at radioshack or walmart)

I would change the battery, then reflash the bios with the latest version. If that doesn't fix it then you may have a problem with the mobo.

 

[blackstealth007]

i updated my bios to 1010 in windows environment. Ill switch the batterie tomorrow. Ill try what you said. Ill get back to you 3/26/05. thanks

 

[boborich]

All you need to do is to change the battery, that's all.

 

[Googer]

Originally posted by: blackstealth007
i updated my bios to 1010 in windows environment. Ill switch the batterie tomorrow. Ill try what you said. Ill get back to you 3/26/05. thanks

THE most common CMOS/BIOS battery is a CR2032 99% of modern motherboards use them.

 

[blackstealth007]

all I have to do is change the battery? The computer says bios is not installed, but in the windows environment and on startup it says I have 1010 beta. I updated with asus update via internet. Ill try the battery thing right now though. also after i save changes and exit bios the screen goes off. Corrupt Bios?

 

[blackstealth007]

I changed the battery and it didnt do anything. Ill flash the bios back to 1009. maybe that will fix the cmos problem

 

[Googer]

Originally posted by: blackstealth007
I changed the battery and it didnt do anything. Ill flash the bios back to 1009. maybe that will fix the cmos problem

No, it probably won't fix you problem. I have seen this before on many types of computers on every thing from compaq to dell and ASUS to INTEL (motheboards). Get a new CR2032 before you flash it.

 

[blackstealth007]

It didnt. Check my other topic (My computer still issues "CMOS checksum bad" and now has a few more problems!)

 

[Googer]

Originally posted by: blackstealth007
It didnt. Check my other topic (My computer still issues "CMOS checksum bad" and now has a few more problems!)

Fill us in please! What have you and haven't you done so far?

Thanks!

 

[blackstealth007]

I changed the battery and it still doesnt save the info. By the way to those who just joined, it says "CMOS checksum bad". Once I exit and save bios, the screen goes off. THe computer will still be running though.

 

[blackstealth007]

I flashed from 1010 to 1009, no fix still.

 

[blackstealth007]

go to my other topic to discuss on please. Its more explained in this topic-My computer still issues "CMOS checksum bad" and now has a few more problems!

 

[Googer]

http://www.pcguide.com/ts/x/sys/booterrGBER08-c.html

 

[blackstealth007]

Ill read this stuff and see if they can help me. Thanks. Ill get back to you guys. Keep posted. (might be until saturday though)