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CMOS Checksum error! Warning system is in safe mode now.

Last response: in CPUs
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October 24, 2013 12:13:50 AM

Hi all!

I am facing a serious trouble with my machine. Before I explain the problem let me explain the circumstances under which the problem has crept up. I have used this machine for as long as 7 years with timely upgrades of the hardware. My current configuration is as follows.
Mobo- Bio star (model number not known - 6 months old)
Ram - 3GB DDR 2 (year old)
HDD - 350gb WD (brand new)
processor - AMD 4800+ 64X2 (3 years)

For last 2 months my machine was kept aside without any HDD or RAM attached as my 2 350 GB HDD's crashed unexpectedly after serving me for 6 long years. A couple of days earlier I bought a new HDD WD 350 GB and decided to assemble my system again. I connected the HDD, RAM and DVD drive into the mono and powered on the system with Win 7 disk in the optical drive as I had to install the OS on the new drive. The installation went on smoothly till the time the machine restarts for the first time after loading, extracting and updating the system files. That is where I think the problem started. The machine did not restarted the way it was supposed to be. It didn't even go beyond the POST screen. When the POST started the system did all the usual things till searching for the attached peripherals on the machine. After that it gave a error message as below:
CMOS Checksum error.
Warning! Machine is now in safe mode.
Please re-setting the CMOS setup in BIOS.
Press F1 to continue, Del to enter bios setup, F8 to get startup options and F9 for boot device list.

Now as per the message I tried to enter the bios but my keyboard didnt seem to respond. I tried F8 and F9 but same response. The only key that seemed to be working was F1. So I pressed F1. What happened was that the windows welcome screen flashed and message read windows is loading system files. After that I got an error message window stating that the windows is not installed properly and the setup will resume upon next setup. Press OK to restart. When I click on OK the windows shut down to restart but it never came back on. Since then the problem is persistent.
All that I have tried after doing a little search o Google is replacing the CMOS battery. Tried hard reboot and reset but no use.
Any help in this regard would be appreciated.
Thanks and regards.

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a b à CPUs
October 24, 2013 5:30:35 AM

After clearing the cmos you couldn't get in to the bios?

Clearing the cmos also clears date and time,maybe this is why the installation isn't going further.
After a clear cmos you should always choose the optimal default settings in the bios and if nessesary adjust time and date,then save with F10.

Maybe you should try to get into the bios wthout the hd attached to the motherboard,just to see if that will work.
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October 31, 2013 1:34:42 PM

Vic 40 said:
After clearing the cmos you couldn't get in to the bios?

Clearing the cmos also clears date and time,maybe this is why the installation isn't going further.
After a clear cmos you should always choose the optimal default settings in the bios and if nessesary adjust time and date,then save with F10.

Maybe you should try to get into the bios wthout the hd attached to the motherboard,just to see if that will work.



Hi Vic.
Thanks for the reply. I have already tried to boot the system without any HDD attached. Still I could not get past the POST screen apart from pressing F1 key to continue. And without the HDD attached it does not show any message apart from blank black screen.
I asked an IT guy from my office regarding the same. He advised to change the bios chip from the mobo by a replacement that I can purchase from the market. Obviously of the same make and brand. But I am not too sure whether I should do this.
Kindly advise.

Regards.
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a b à CPUs
October 31, 2013 2:08:35 PM

jack08sparrow said:

I asked an IT guy from my office regarding the same. He advised to change the bios chip from the mobo by a replacement that I can purchase from the market. Obviously of the same make and brand.


I wouldn't do that seeing that your motherboard is only 6 months old.When you want it checked out you go for warranty.

Did you already try to clear the cmos by the right jumper? Which one should be explained in the manual of the motherboard.
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