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A VGN-FS850/W bios problem

post #1 of 7
6/12/09 at 2:28pm
Thread Starter 
I have a VGN-FS850/W notebook. When I turn it on I can't activate the Bios screen. I've tried hitting the F2 key nothing happens. I've taken the memory out trying to trigger a bios event but that does not help. Sometimes it won't even show the Sony Logo.

It has a hard drive that has an lsass.exe error at boot-up.
I install a brand new HD and I get the same problem, can't get to the bios. I have scanned the drive for viruses. It a had a few minor ones but not Sasser as I suspected.

Is it possibly a bios battery that is dead.

Does anyone know why the bios what appear or what else could be the problem.
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post #2 of 7
6/12/09 at 8:29pm
You can try replacing the CMOS battery and see if the system reacts. Also try to boot it up from an installation CD?

cheers ...
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post #3 of 7
6/13/09 at 1:01am
Thread Starter 
I had to purchase the recovery disk. I tried the disk but the cd won't see it as a bootable CD, It scans it and then just goes onto no Operating system Found.

I'm still considering taking it apart. But there is just so many screws. The battery is on the solder side of the Circuit board. So I have to totally take the whole thing apart.

I did find in this forum a person with the same exact problem from last year. They didn't have any answers that were of help.

Do you think this is a motherboard issue. Or, are Sony's just a stubborn machine that only likes a paticular brand of hardware.
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post #4 of 7
6/13/09 at 1:27am
http://www.notebookforums.com/thread222587.html

Good source for dissassembly guides.

The recovery disk probably was looking for the recovery partition on the drive, which it cannot access. I would try just with a new hard drive and an installation disk first.

cheers ...
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post #5 of 7
6/13/09 at 1:52am
Thread Starter 
Thanks for the info. The recovery partition is not there, Fry's took care of that. I have tried a new HD with no success. If I do figure it out I'll post what happened. So some else won't have to pull their hair out also.

Thanks again for trying.
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post #6 of 7
6/14/09 at 5:08pm
Thread Starter 
Well, It's fixed.

I took all the screws out, by number. Although I couldn't remove the motherboard of the case all the way, I could get to the battery and unplug it. Left it out for about 10 minutes and carefully put in back in. After that it booted up with no errors at all. I could now get into the BIOS. When it booted into Windows it only had one fixable small error. But, the Lsass.exe error was gone. That might be do to the fact when I removed the hard drive previously and plugged it into my test computer via a USB converter cable and scanned it with every virus tool I could find, and found about 16 trojans, that might have fixed that issue. But it's up and running.

One thing everyone should know. Sony CMOS batteries are not easy to find. They are a special bread.

Thanks qhn for keeping me thinking.
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post #7 of 7
6/14/09 at 7:40pm
Nice to hear. My fee = pics of your project (please?)

Glad that you fixed it.

cheers ...
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