Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

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

64-bit Windows 10 Pro

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

Thread Tools

Similar help and support threads
Thread Forum
IE10, IE11 will NOT reinstall into Win7 after op/sys reinstall/repair
Recently I had to *reinstall* the op/sys. Something got into my user profile documents & corrupted the files including the network ability to connect to the internet. Not wanting to dump the op/sys I chose the route of using the install disc to *overwrite* the current system to correct the...
Browsers & Mail
Erased hard drive to reinstall Win 7 but now won't reinstall
I wanted to convert my Sony Vaio back to Windows 7 after updating to Windows 8 last year. I tried using the recovery disks that I created when I got the laptop. It told me that I couldn't reinstall. So after trying multiple things, I finally decided to wipe out the entire hard drive thinking...
Installation & Setup
Uninstall to reinstall or just reinstall cs5 premiere pro
error message :m2ts AVCHD suddenly giving unsupported compression error I have just had this happen to me Video files I have opened previously in Premiere Pro cs5 are now giving me this damn error message. I really am coming to hate this program. Big talk low on performance. So what should I...
Can I reinstall this way?
I partitioned my drive prior to installing W7 so that my operating system would be on a different partition than my data. In retrospect, I made the operating system partition way too small, and I've had nothing but trouble with trying to keep the partition from filling up. Would it be possible...
Installation & Setup
Uninstall Win7 & Reinstall XP then Reinstall Win7?
Hello, I have Dell XPS M1710 and installed Windows 7 on it a few weeks ago. I have had several issues with the program and would like to uninstall it and then use my Dell Reinstallation DVD to put my computer back the way it was when I bought it. Then I want to try to install Windows 7...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 19:12.
Twitter Facebook Google+