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Windows 7: Bios Clock time changes after every Restart even after replacing Bios

23 Aug 2011   #1

Win & Pro and Enterprise 64Bit
Bios Clock time changes after every Restart even after replacing Bios


I've got an Acer Model As5742 Laptop with an i5 480M processor and 8 GB of good Ram. I'm running Win 7 Pro 64 Bit. It's only about 5 months old and this started about a month ago. I have no other problems. IE: Blue Screens or Lockups or anything, just the Bios clock changes to a random date and time after every restart. I replaced the Bios battery twice and it only effects the chore of having to reset the time in Windows every time I boot.

I'm going to send it to Acer to be repaired within a week or two, but maybe it's not a bad timing mechanism in the motherboard and one of you people have a correct solution to it. Which will save me the trouble of sending it in for a motherboard replacement.

I do have all the drivers and bios updates installed. Oh yes I've ran about 15 different virus Etc. Malware scans with several different products and they all come back clean.
I ran System File Checker SFC /scannow from the command prompt several times that also comes back OK.



My System SpecsSystem Spec
23 Aug 2011   #2

Windows 7 Home Premium 64bit 6.1 Build 7601 (SP1)

Quote   Quote: Originally Posted by Earthmanx View Post
...just the Bios clock changes to a random date and time after every restart.
If this is the case then Windows wouldn't change it, though malware might I suppose (and you have checked for this).

Can you otherwise make changes to your BIOS settings that "stick"? If yes, then return/repair is all I can think of. If NONE of your BIOS changes survived reboot though, then I might consider whether that laptop left the factory with its "reset CMOS" jumper in the "reset" position. Dunno if laptops have these, but most desktop mobos do of course.

Oops you said "started a month ago" so my "left the factory jumpered wrong" would not apply.
My System SpecsSystem Spec
23 Aug 2011   #3

Microsoft Community Contributor Award Recipient


Let Acer check out, may a short on the MOBO.
My System SpecsSystem Spec

23 Aug 2011   #4

Microsoft Community Contributor Award Recipient


Hello Earthmanx and welcome to Seven Forums.

Have you checked to make sure you have the correct time zone set?
My System SpecsSystem Spec

 Bios Clock time changes after every Restart even after replacing Bios

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