cmos checksum error

[Unknown]

Of course. That is a protective device. It is to protect the item from
people who install batteries
backwards. I repeat, that is the dumbest thing you can do (Put batteries in
backwards)..

 

[Jose]

There is a diode in that path, that also functions as
reverse polarity protection. Go to page 18 of this document, and
look at diode D3 in the bottom left hand corner of page 18. if
the battery were reversed, the D3 diode would be reverse biased,
and the current could not flow.

http://www.intel.com/design/chipsets/designex/BXDPDG10.htm

Also, as a result of that diode, plopping the battery in
backwards, isn't that effective. The provided CMOS jumper,
applied to the three pin header shown in that schematic, is
effective at doing its job. It won't take long to
drain the CMOS well. It's a bit harder, on the motherboards
that provide solder pads and no header pins, to consistently
hold the connection long enough, to complete
the draining. But if you have a header to work with,
that is just as good at sitting in a holding pattern, as
jamming the battery in backwards.

    Paul

Yes - I have seen that diagram before. I like schematics.

I think I would just use the jumper, If the OP would comply with the
request for system make and model or msinfo32 info, we would be able
to look up a diagram and advise exactly what to do. The correct
questions have been asked, but the answers are not coming.

I was just trying to figure out how this put the battery in backwards
idea came about. It sounded astonishing.

 

[Jose]

Jose,

Here's what you requested.

OS Name Microsoft Windows XP Home Edition
Version 5.1.2600 Service Pack 2 Build 2600
OS Manufacturer Microsoft Corporation
System Name PAPA
System Manufacturer Biostar
System Model 945GC Micro 775
System Type X86-based PC
Processor x86 Family 6 Model 15 Stepping 13 GenuineIntel ~1996 Mhz
Processor x86 Family 6 Model 15 Stepping 13 GenuineIntel ~1996 Mhz
BIOS Version/Date Phoenix Technologies, LTD 6.00 PG, 5/23/2007
SMBIOS Version 2.4
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.2180
(xpsp_sp2_rtm.040803-2158)"
User Name PAPA\papa
Time Zone Malay Peninsula Standard Time
Total Physical Memory 1,024.00 MB
Available Physical Memory 591.12 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 2.39 GB
Page File C:\pagefile.sys

Good.

Go to their WWW site:

http://www.biostar.com.tw/app/en/mb/content.php?S_ID=284

Click the Manual tab, download, etc. It is an exe that extracts 2 PDF
files which I already downloaded and scanned and opened them.

The clear/reset BIOS section is on page 19 and has a few easy steps of
instructions. (battery inversion is not mentioned)

You may also do some searches in their FAQ section for your error
condition, and/or use their E-Support function (send them your
msinfo32 stuff too) - maybe somebody already figure this out.

Let us know how you get on.

 

[Amanda]

Jose,

Thank you so much.

But I've only got 1 PDF file, not 2. And the "Clear CMOS" procedure is on
page 18. Page 19 shows Power Source Header. I hope we have the same file.
Its titled:
I945C_M7A_I945C-M7_0522C_B.pdf

Will be trying that soon and will let you know if things work out.

Regards Sonny

Jose,

Here's what you requested.

OS Name Microsoft Windows XP Home Edition
Version 5.1.2600 Service Pack 2 Build 2600
OS Manufacturer Microsoft Corporation
System Name PAPA
System Manufacturer Biostar
System Model 945GC Micro 775
System Type X86-based PC
Processor x86 Family 6 Model 15 Stepping 13 GenuineIntel ~1996 Mhz
Processor x86 Family 6 Model 15 Stepping 13 GenuineIntel ~1996 Mhz
BIOS Version/Date Phoenix Technologies, LTD 6.00 PG, 5/23/2007
SMBIOS Version 2.4
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.2180
(xpsp_sp2_rtm.040803-2158)"
User Name PAPA\papa
Time Zone Malay Peninsula Standard Time
Total Physical Memory 1,024.00 MB
Available Physical Memory 591.12 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 2.39 GB
Page File C:\pagefile.sys

Good.

Go to their WWW site:

http://www.biostar.com.tw/app/en/mb/content.php?S_ID=284

Click the Manual tab, download, etc. It is an exe that extracts 2 PDF
files which I already downloaded and scanned and opened them.

The clear/reset BIOS section is on page 19 and has a few easy steps of
instructions. (battery inversion is not mentioned)

You may also do some searches in their FAQ section for your error
condition, and/or use their E-Support function (send them your
msinfo32 stuff too) - maybe somebody already figure this out.

Let us know how you get on.

 

[Unknown]

Isn't Linus the dog in the Snoopy comics?

 

[Unknown]

Oops, I should have said isn't Linus the owner of the dog in the Snoopy
comics?