Unable to install Windows 7 SP1 due error 800F0A12, any help new HP G61 laptop

[CherylG]

@ottosykora

Try  running the SUR tool, then install SP1:

http://windows.microsoft.com/en-GB/windows7/What-i​s-the-System-Update-Readiness-Tool

[wel51x]

have you ensured the system partition is active?

1. Start->Administrative Tools->Computer Management

      if you don't have "Administrative Tools" enabled, do

      Start->Run... and type "compmgmt.msc /s" in  the input box

            If you don't have "Run..." enabled, right-click on the toolbar, click on "Properties", click the "Start Menu" tab, click on

                 "Customize...", scroll down to where it says "Run command", click the box next to it and ensure the box is now

                 checked. Then click "OK", and "OK" again.

2. On the left-hand side, open up "Disk Management" (under "Storage") by clicking on it.

3. On the list in the center panel, right-click the list item that reads "SYSTEM", and click the "Mark Partition as Active"

      item. If it is greyed-out, the partition is already active, so this won't help with your problem.

4. Exit Computer Management and retry your SP1 install.

[rmorocco]

I had the same issue on a Win 7 64 bit machine.  Same 800F0A12 error code.  I followed the process outlined at http://www.nirmaltv.com/2011/02/21/windows-7-service-pack-1-sp1-installation-error-0x800f0a12/, rebooted, then went back to Windows Update for SP1.  After mounting the volume, SP1 installed.  I hope this helps.

[dinub1]

I am having the same issue with this new HP dv7-4925us latop model which is only 2 weeks old.
Everything works and looks fine. Any updates ran perfectly. Only this Win 7 64 bit SP1 does not work.
I do not have the laptop with me but the error is different. It says EOF error something... update failed. I contacted HP chat. They advised do this, do that. Nothing. Same thing. One of them even advised to perform the SP1 upgrade in safe mode with networking. same thing. Upgrade failed. Immediately. All they sugested checks out with no errors whatsoever. No registry errors either.
If I wiped out the HDD (I did after backup) and used a Win 7 64 with SP1 on it, instl completed fine, OS operative, but I  lost functionality. No propritary hardware drivers HP uses on this laptop are on the Win 7 instl DVD. and no HP driver DVD either. Just a system restore. Useless. I will need to download those drivers from HP.

However for the 1st time this morning I read the chat support person stating that "HP does not encourage upgrading or downgrading existing pre-installed OS". And I think that must be it. It is capped

I still need to check tonight if I have more than one partition there defined as active, though I think I don't have more than one.

[dinub1]

Right on My computer/properties... assuming you are running Win 7. But XP is the same. It would tell you what OS is in usage, if 32 or 64 bit, how much RAM installed/availablr, the CPU type etc. And if OS is activated or not. Give it a try and you shall see for yourself.