Hello,

Each time I boot my computer, it shows cmos checksum error. Press F8 for
system configuration but the F8 doesn't work, F9 doesn't work either. F1
allows it to boot and the system gets set at 1st Jan 2007 12.00 am.

Regardless of how many times I change the bios, it will revert after each
power down. I don't have a floppy but it seems to insist i do, strange thing
is .. a floppy disk drive and floppy controller exist on my device manager.
If I remove it, the computer detects the zoombie floppy and reinstalls it.

I've also replaced the button battery but that didn't help.

Could anyone help?

Thanks in advance.
Sonny

P.S I had to reset the time before posting because it says this post is too
old

How did you change the BIOS? Did you rewrite it?
"Amanda" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hello,
>
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>
> Regardless of how many times I change the bios, it will revert after each
> power down. I don't have a floppy but it seems to insist i do, strange
> thing
> is .. a floppy disk drive and floppy controller exist on my device
> manager.
> If I remove it, the computer detects the zoombie floppy and reinstalls it.
>
> I've also replaced the button battery but that didn't help.
>
> Could anyone help?
>
> Thanks in advance.
> Sonny
>
> P.S I had to reset the time before posting because it says this post is
> too old
>

You have a hardware problem. Are you sure the button battery was good?
Are you killing power to the PC externally, like with a power strip? If
so, don't.

Amanda wrote:

> Hello,
>
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>
> Regardless of how many times I change the bios, it will revert after each
> power down. I don't have a floppy but it seems to insist i do, strange thing
> is .. a floppy disk drive and floppy controller exist on my device manager.
> If I remove it, the computer detects the zoombie floppy and reinstalls it.
>
> I've also replaced the button battery but that didn't help.
>
> Could anyone help?
>
> Thanks in advance.
> Sonny
>
> P.S I had to reset the time before posting because it says this post is too
> old
>
>

"Amanda" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

Amanda wrote:
> Hello,
>
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>
> Regardless of how many times I change the bios, it will revert after each
> power down. I don't have a floppy but it seems to insist i do, strange thing
> is .. a floppy disk drive and floppy controller exist on my device manager.
> If I remove it, the computer detects the zoombie floppy and reinstalls it.
>
> I've also replaced the button battery but that didn't help.
>
> Could anyone help?
>
> Thanks in advance.
> Sonny
>
> P.S I had to reset the time before posting because it says this post is too
> old
>
>

Other possible reasons:

1) The new battery is already flat. Some retailers carry old stock.

2) The motherboard has a defect in the battery area, which is
rapidly draining the battery.

3) The "Clear CMOS" jumper is in the wrong position.

4) The "Clear CMOS" jumper was used, while the motherboard still
had power. A tiny diode has been damaged by doing so, such as the
BAS40W-05. The dual diode, with common cathode, is in the
CMOS battery path, and logical ORs together the motherboard
3VSB power source, with the CMOS battery power source. If the
diode package is damaged, that can lead to CMOS problems. Three
of my motherboards, use this particular device. One poster here,
repaired his by using two separate 1N914 type diodes, and claims it
works fine that way. So he replaced the three-legged dual diode,
with two separate diodes. One reason the BAS40W-05 in this example
is used, is because of low Vf forward voltage drop. The diode also
prevents the CR2032 coin cell battery from being charged. You
cannot safely charge a CR2032.

http://www.diodes.com/datasheets/ds30114.pdf

When "Clearing CMOS", you should always unplug the computer, because
so many motherboards have this potential fault mode in their design.

The odds of being able to find that component, are pretty low.
Logically, it should be located near the battery, but there is
no reason it cannot be placed all the way on the other side
of the motherboard. If the motherboard designer is a meany, you might
never find it. It is so small, and so similar to many other three-legged
devices, you could spend hours staring at the motherboard looking for
it. I've spent up to 2 hours with a stereoscopic microscope in the
lab, looking for components of that type. That is how long it takes to
do a thorough search. You need some magnification, to be able to read
the "K45" printed on top of that example component. At home, I use
a small magnifying glass for that purpose.

If you've never used the "Clear CMOS" jumper on your motherboard,
then you have nothing to worry about. But if you frequently use
that function, then you might have inadvertently left the power
on the system.

HTH,
Paul

Hi,

Thanks to all who replied. I reset the BIOS hitting delete, change the first
boot sequence to hard disk, disable the search for floppy. Change the time
yet again.

Bob L, I bought a brand new battery and its the same thing.

regards
Sonny



"Ben Myers" <(E-Mail Removed)> wrote in message
news:e7xeOJ%(E-Mail Removed)...
"Amanda" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

Ben,

I've just rebooted and tried hitting the F8 button, doesn't work, comes up
to the same screen with the f8 f9 f1 and delete option.

regards,
Sonny


"Ben Myers" <(E-Mail Removed)> wrote in message
news:e7xeOJ%(E-Mail Removed)...
"Amanda" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

Bob,

Nope it didn't work. Its the same even if i do a Start-Turn off
Computer-Restart.

Sonny

"Bob I" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> You have a hardware problem. Are you sure the button battery was good? Are
> you killing power to the PC externally, like with a power strip? If so,
> don't.
>
> Amanda wrote:
>
>> Hello,
>>
>> Each time I boot my computer, it shows cmos checksum error. Press F8 for
>> system configuration but the F8 doesn't work, F9 doesn't work either. F1
>> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>
>> Regardless of how many times I change the bios, it will revert after each
>> power down. I don't have a floppy but it seems to insist i do, strange
>> thing
>> is .. a floppy disk drive and floppy controller exist on my device
>> manager.
>> If I remove it, the computer detects the zoombie floppy and reinstalls
>> it.
>>
>> I've also replaced the button battery but that didn't help.
>>
>> Could anyone help?
>>
>> Thanks in advance.
>> Sonny
>>
>> P.S I had to reset the time before posting because it says this post is
>> too old
>

If it won't hold the BIOS settings through a simple Restart, (never
actually removes power from the motherboard)then it certainly is a
hardware issue with the motherboard.

Amanda wrote:

> Bob,
>
> Nope it didn't work. Its the same even if i do a Start-Turn off
> Computer-Restart.
>
> Sonny
>
> "Bob I" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>
>>You have a hardware problem. Are you sure the button battery was good? Are
>>you killing power to the PC externally, like with a power strip? If so,
>>don't.
>>
>>Amanda wrote:
>>
>>
>>>Hello,
>>>
>>>Each time I boot my computer, it shows cmos checksum error. Press F8 for
>>>system configuration but the F8 doesn't work, F9 doesn't work either. F1
>>>allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>>
>>>Regardless of how many times I change the bios, it will revert after each
>>>power down. I don't have a floppy but it seems to insist i do, strange
>>>thing
>>>is .. a floppy disk drive and floppy controller exist on my device
>>>manager.
>>>If I remove it, the computer detects the zoombie floppy and reinstalls
>>>it.
>>>
>>>I've also replaced the button battery but that didn't help.
>>>
>>>Could anyone help?
>>>
>>>Thanks in advance.
>>>Sonny
>>>
>>>P.S I had to reset the time before posting because it says this post is
>>>too old
>>
>
>

On Tue, 15 Jun 2010 07:00:15 +0800, "Amanda" <(E-Mail Removed)>
wrote:

>
>Bob,
>
>Nope it didn't work. Its the same even if i do a Start-Turn off
>Computer-Restart.
>
>Sonny
>
>"Bob I" <(E-Mail Removed)> wrote in message
>news:(E-Mail Removed)...
>> You have a hardware problem. Are you sure the button battery was good? Are
>> you killing power to the PC externally, like with a power strip? If so,
>> don't.
>>
>> Amanda wrote:
>>
>>> Hello,
>>>
>>> Each time I boot my computer, it shows cmos checksum error. Press F8 for
>>> system configuration but the F8 doesn't work, F9 doesn't work either. F1
>>> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>>
>>> Regardless of how many times I change the bios, it will revert after each
>>> power down. I don't have a floppy but it seems to insist i do, strange
>>> thing
>>> is .. a floppy disk drive and floppy controller exist on my device
>>> manager.
>>> If I remove it, the computer detects the zoombie floppy and reinstalls
>>> it.
>>>
>>> I've also replaced the button battery but that didn't help.
>>>
>>> Could anyone help?
>>>
>>> Thanks in advance.
>>> Sonny
>>>
>>> P.S I had to reset the time before posting because it says this post is
>>> too old
>>
>

Have you done a virus scan ?