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Windows 7: Reinstall of SP1

12 Feb 2012   #1

Win7 Ultimate x64, Windows 8 Enterprise x64
Reinstall of SP1

Just after some advice here.

Basically I would like to reinstall Service Pack 1.

I cannot go back in time, as I installed SP1 when it first came out. It has been fine until recently. Because all has been fine I deleted all the old files and System Restore does not go back far enough.

I have the SP1 install.exe file (537mb), but when I try to install it I cannot as it tells me SP1 is already installed, which of course it is.

So, can I edit the registry, and kid the OS into thinking it is Windows 7 (but before SP1), so that I can reinstall SP1. I believe the relevant key is HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

Thanks in advance.

My System SpecsSystem Spec
12 Feb 2012   #2
Microsoft MVP

64-bit Windows 8.1 Enterprise

Hello Paul,

If you didn't use the Windows 7 SP1 Disk Cleanup Tool, then you should be able to just uninstall SP1 and install it again afterwards.

If you did, then I'm afraid the only way is to do a clean reinstall of Windows 7.

What is wrong for why you wanted to reinstall SP1? Maybe we could help with that.

Hope this helps,
My System SpecsSystem Spec
12 Feb 2012   #3

Win7 Ultimate x64, Windows 8 Enterprise x64

Hi Brink,

Please see this thread Error code 0x80073712

My System SpecsSystem Spec

 Reinstall of SP1

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