CMOS Checksum error on power on

Hi,

I got a "CMOS Checksum Error" every time I power on my pc. How can I solve
this? What's going on? I have replaced the cmos battery recently.

TIA

"JAD" wrote in
:

battery is in backwards or is defective. you did not enter cmos, make
appropriate changes, and then save those changes.

I have entered the CMOS, made appropriate changes and save. As for the
battery, I haven't any troubles before after the change. The problem is,
the error would come up again on the next power up.

TIA

battery is in backwards or is defective. you did not enter cmos, make
appropriate changes, and then save those changes.

"Ricky Romaya" wrote in message
.159...
Hi,

I got a "CMOS Checksum Error" every time I power on my pc. How can I solve
this? What's going on? I have replaced the cmos battery recently.

TIA

"Ricky Romaya" wrote in message
.159...
"JAD" wrote in
:

battery is in backwards or is defective. you did not enter cmos, make
appropriate changes, and then save those changes.

I have entered the CMOS, made appropriate changes and save. As for the
battery, I haven't any troubles before after the change.

Is this before and after? after the change? before the change? If your
saying 'no troubles' before, why did you change the battery?

If this started happening after the battery change, then the battery is
wrong type or defective. A checksum error occurs when the cmos chip drains
the power of the battery or there is no current to support the saving of
information. The most obvious sign is when your time is incorrect after each
boot.


The problem is,
the error would come up again on the next power up.

TIA

On 05 May 2006 18:58:59 GMT, Ricky Romaya
wrote:

"JAD" wrote in
:

battery is in backwards or is defective. you did not enter cmos, make
appropriate changes, and then save those changes.

I have entered the CMOS, made appropriate changes and save. As for the
battery, I haven't any troubles before after the change. The problem is,
the error would come up again on the next power up.

TIA


Just for the heck of it, go into the bios menus again, and
exit saving changes (even if you make no changes)... just do
again even if you had already.

I suppose it's a silly question but when you changed the
battery, are you sure it was a fresh battery installed?
Some places don't rotate stock properly and so inevitably
someone ends up buying old batteries.

snip

Just for the heck of it, go into the bios menus again, and
exit saving changes (even if you make no changes)... just do
again even if you had already.

I suppose it's a silly question but when you changed the
battery, are you sure it was a fresh battery installed?
Some places don't rotate stock properly and so inevitably
someone ends up buying old batteries.


it could also (possibly) be slightly tarnished connections

On 05 May 2006 18:44:12 GMT, Ricky Romaya wrote:

Hi,

I got a "CMOS Checksum Error" every time I power on my pc. How can I solve
this? What's going on? I have replaced the cmos battery recently.

TIA

After changing the battery, did you short the pins next to the battery with
the computer OFF?

BobN wrote in
:

After changing the battery, did you short the pins next to the battery
with the computer OFF?

I guess a full story is in order. Sorry if I don't explain it sooner.

The problem started with the old battery. Because of it, I changed it.
No, I didn't short any jumper when I changed it. After the change, the
problem persists for the next 2 power up boots, then everything back to
normal. No checksum errors since then. This is what I meant by "I have no
problem with the new battery before."

About three days ago, I have what I believe is a blackout. Luckily I used
UPS, and I can turn off my PC. Then I found out that my wall mounted
power outlet have melted, somehow. Even the walls surrounding the outlet
is searing hot. I panicked, cut the main power for my home and replaced
the electrical wirings. The new wiring scheme seemed to work fine, at
least I tried a dozen other appliances and they work fine for me.

Then I tested my PC last. That's when the checksum error occurs again,
and still until this day.

So, am I required to short the pins when I change cmos battery? Strange,
AFAIK it's not required. Which pins do you refer to anyway? The Clear
CMOS jumper?

TIA

snip
So, am I required to short the pins when I change cmos battery? Strange,
AFAIK it's not required. Which pins do you refer to anyway? The Clear
CMOS jumper?

TIA


you are not required to clear the CMOS when you change the battery...
but since you are having problems you might as well do so and see if it
can solve your problem.

"Ricky Romaya" wrote in message
.159...
BobN wrote in
:

After changing the battery, did you short the pins next to the battery
with the computer OFF?

I guess a full story is in order. Sorry if I don't explain it sooner.

The problem started with the old battery. Because of it, I changed it.
No, I didn't short any jumper when I changed it. After the change, the
problem persists for the next 2 power up boots, then everything back to
normal. No checksum errors since then. This is what I meant by "I have no
problem with the new battery before."

About three days ago, I have what I believe is a blackout. Luckily I used
UPS, and I can turn off my PC. Then I found out that my wall mounted
power outlet have melted, somehow. Even the walls surrounding the outlet
is searing hot. I panicked, cut the main power for my home and replaced
the electrical wirings. The new wiring scheme seemed to work fine, at
least I tried a dozen other appliances and they work fine for me.

Then I tested my PC last. That's when the checksum error occurs again,
and still until this day.

So, am I required to short the pins when I change cmos battery? Strange,
AFAIK it's not required. Which pins do you refer to anyway? The Clear
CMOS jumper?

TIA

that would be the one
sometimes when changing the battery, you attempt to put it in and it slips
out and proceed to reinsert it, this process powers the MOS temporarily and
can corrupt it....clearing helps to fix this.