General discussion

Locked

CMOS error

By jon_w31 ·
On boot up I get a error message "CMOS/GPNV CHECKSUM BAD" message.
Allsettings in Bios revert to default.
However this occurs only occasionaly. The system can run for 3 weeks with no problems
I have relaced the CMOS Battery to no avail.
I have run diagnostics "Microscope" whick shows no errors.
Any sugestion what the problem may be and how I can prove it for a warranty claim?
Thanks

This conversation is currently closed to new comments.

11 total posts (Page 1 of 2)   01 | 02   Next
| Thread display: Collapse - | Expand +

All Comments

Collapse -

CMOS error

by dmiles In reply to CMOS error

This error message applies to memory that may be causing a problem or going bad check the memory modules to make sure that memory is secure in slots,this may mean an error message that Bios is detecting bad memory module.

Collapse -

CMOS error

by jon_w31 In reply to CMOS error

Poster rated this answer

Collapse -

CMOS error

by drdmc In reply to CMOS error

You can try cleaning the memory contacts with a "white" pencil eraser.

Collapse -

CMOS error

by jon_w31 In reply to CMOS error

Poster rated this answer

Collapse -

CMOS error

by zlitocook In reply to CMOS error

Have you added any memory lately? This could be from diffrent speed memory or parity non parity memory. Try typing memcheck in your browser, I down loaded a free memory checker a few months ago that will scan and report what memory you have and whattype.

Collapse -

CMOS error

by jon_w31 In reply to CMOS error

Poster rated this answer

Collapse -

CMOS error

by TheChas In reply to CMOS error

If the system is under warranty, you may have voided the warranty by opening the system.
If this is a user assembled system, there is still a question from replacing the CMOS battery.

That said, the next time the error occours take a photograph of the screen. That should be all the documentation that you need to prove there is a problem.

Contact the system / mother board mfg. This may be a know issue, with a bios update to fix the problem.

If this is a system you built yourself, I would go with soulriders advice, and swap in some different RAM before I changed out the MB.

Collapse -

CMOS error

by jon_w31 In reply to CMOS error

Poster rated this answer

Collapse -

CMOS error

by GuruOfDos In reply to CMOS error

I'm assuming when you say you replaced the battery you are referring to a Lithium Coin Cell, such as a CR2035 or similar. Have you tested the voltage on the new battery to make sure it is at least 3.6v? If you have replaced an alkaline battery or other type (black plastic case and flying leads to mobo), have you set the jumper for internal/external battery correctly. Some Mobos have the option for on board or external battery and the jumper must be set correctly. Failing that, it sounds like the diode/resistor circuit for the CMOS battery is playing up. This is fixable if you know enough about electronics and are handy with a soldering iron, otherwise change the mobo or leave the power on all the time.

Collapse -

CMOS error

by jon_w31 In reply to CMOS error

Poster rated this answer

Back to Desktop Forum
11 total posts (Page 1 of 2)   01 | 02   Next

Related Discussions

Related Forums