Question about Intel ASRock Penryn1600SLI-110dB LGA 775 NVIDIA nForce 650i SLI ATX Motherboard

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Penryn1600sli-110db CMOS CHECKSUM BAD ERROR

I have recently updated the bios keep in mind this problem was existing on my old 1.20 ver bios and now everytime I restart it gives me two options.
press F2 to go to setup
and
press F1 to load default settings

Also, when I do load optimal default settings in the bios, it triggers a shutdown from the cpu temp going to high. But when I choose to press F1 option to load defaults. The temperature sits between 40 and 41c and stables as long as I keep pressing F1 when boot up. I have been watching the temp status through Asrocks OC tuner ( but dare not touch the OC settings). Added hardware, besides what is set to be recognized in the bios default, is obviously not showing when it does boot up. Getting games to play is a obsolete as it wont work longer then five minutes before shutting down the computer. Primarily because the default setting is saying my primary video bus is PCI instead of PCIE.
So I'v taken steps but need some advice.
I have cleared the cmos from jumper 1 and 2 to 2 and 3 for five seconds. then put it back. Nothing new happend

Should I maybe remove the cmos battery in series of jumping the 2 and 3 pins? and if so, how long?

I'm beginning to think the CMOS battery is dead because I had this tower unpluged for over 6 months straight and replaced the PSU. This board was also sitting in a warhouse for who knows how long.
My system is as follows:
Penryn1600sli-110db Motherboard
Intel Core 2 Quad Kentsfield 2.4 Ghz Q6600 LGA 775
2 1 Gig of DDR2 RAM 667 pc 5200
Foxconn Gforce 8600 gts oc700/2200
Sumsung 200 gig Sata HD
DVD Multi recorder RW

If you need more info I can provide it. Thanks in advance!!

Posted by on

  • sethllz Dec 19, 2008

    I have four 80 mm fans and 2 w/ intake 2 exhaust and one of the exhaust fans is directly on top of my well vented atx case. Up until now i have never experienced this problem, but like i said, it has also been in my closet for 6 months. Its def a bios glitch that raises the temp & after reboot, using f1 option, a stable 40 c is read on the oc tuner. Keep in mind that I did not allow time for cpu to cool, thus making it fact that is was a bios glitch that triggered the auto shut down feature. Thanks for the input!

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  • 68 Answers

I would replace the battery as the 1st thing, however I would also change your cpu fan for a new one and reseat the processor. Also get some decent cpu paste and make sure this is applied properly, and dont forget to wipe the old stuff off!

Does your case have anywhere were you can place some fans? It sound slike you have two problems to me, the battery being one and the overheating the second

Posted on Dec 19, 2008

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The CMOS Checksum Bad Error can be fixed easily by following the listed steps carefully.

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  • The computer may not have been shut down properly e.g. shutting off the computer's main power without first shutting down the computer (MS Windows requires you to shut down your computer before shutting off the power).
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If you suspect that your CMOS battery is not functioning properly, you can easily change it. Before changing your battery, reboot your computer to make sure that the error still exists. If it does, go into your CMOS and write down all of the settings. If all the settings are lost, you can usually retrieve them from your computer manufacturer. Now locate the battery and remove it, you might need to consult your computer’s manual or technical support to remove your battery (the battery a flat, shiny silver colored and coin-shaped). Take down the CMOS battery’s information such as volt, size, etc. Once you have your new battery, you can replace it and reenter your CMOS settings. If your battery was the cause of the CMOS Checksum Bad Error, you should have solved the problem.

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If you have recently upgraded your motherboard and when you turn it on, there is no display. You could check the jumper setting of your motherboard.

http://download.asrock.com/manual/PENRYN1600SLI-110DB.pdf

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