Flashing new BIOS creates CMOS error

Hi,
I have Q200 Desktop.
Yesterday, I checked for the new updates from Lenovo. I found out that there is BIOS update 52JY54USA.
I downloaded the flash version and updated. The updation went successfully without errors.
Trouble started when I rebooted.
During booting my system displayed "CMOS Checksum bad" error. But allowed me to continue to boot into OS.
I tried to update the same BIOS with "Destroy CMOS Checksum" option. There was no improvement.
Eventhough it is not a showstopper I have automated my PC for waking up in midnight and downloading during my Broadband free hours. This will not be possible because I need to press F2 everytime the PC boots and resumes.
By luck I think, I booted into Vista, went to Lenovo website downloaded the CD version of the same BIOS update and burned to a CD. Rebooted and updated the same BIOS update thru CD version.
Now system rebooted and surprise, there is no "CMOS Checksum bad" error.
Now, Is there anyone got this error.
Also is there any reason for this? just a curiosity.
R Balaji

Hi R Balaji,
I don't know what caused your first BIOS update error. But in general, I would recommend always using the bootable CD to update the BIOS, as you ended up doing. Trying to update BIOS from inside Windows is AFAIK far more trouble-prone than using the boot CD.
I'm glad to read that you fixed your problem, congrats.
Best regards,
Frank
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