ERROR_SXS_ASSEMBLY_NOT_FOUND (0x800736b3) installing Windows 7 SP1

Hi Adonis, I feel your pain I truly do, I tried to get sp1 installed for the last month ive read post after post, then I fell across this one, it is the holy grail of fix's, I have sp1 installed by following the info at this page, I hope you get this.

Peace & Blessings

http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_update/how-do-i-get-w7sp1-installed-onto-my-pc-error/88227571-2661-e011-8dfc-68b599b31bf5?page=1&tm=1303581532553#footer

Hi Adonis,

You may try the following steps and check if you can install SP1.

Method 1:

You may try running a SFC scan and check.

This issue may occur if a particular system file is missing or corrupt.

You may refer the Method -The System File Checker tool in the following KB article:

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7

http://support.microsoft.com/kb/929833

Method 2:

You may also try running the system update readiness tool and check if you can install the update.

Refer the link to download system update readiness tool:

http://windows.microsoft.com/en-US/windows7/What-is-the-System-Update-Readiness-Tool

Also refer the below links:

Troubleshoot problems installing a service pack for Windows 7

http://windows.microsoft.com/troubleshootwindows7sp1

Learn how to install Windows 7 Service Pack 1 (SP1)

http://windows.microsoft.com/installwindows7sp1

Steps to follow before you install Windows 7 Service Pack 1 from the Microsoft Download Center

http://support.microsoft.com/kb/2505743