Service Pack 3 – system cannot find the file specified
October 20th, 2010 | 
Author: If you are having this problem installing service pack 3, Here’s how to fix it.
Windows key-R (or start, run)
Type notepad and press enter
Copy the following by highlighting it with your mouse:
regsvr32 wuapi.dll
regsvr32 wuaueng.dll
regsvr32 wucltui.dll
regsvr32 wups.dll
regsvr32 wuweb.dll
regsvr32 Mssip32.dll
regsvr32 atl.dll
regsvr32 Softpub.dll
regsvr32 Wintrust.dll
regsvr32 Initpki.dll
File, Save As, select the type as all, name it fixit.bat, Save it on the desktop, click save.
Now double click the batch file fixit.bat on your desktop (windows – D will get the windows out of the way)
It should say DllRegisterServer in xxxxx.dll succeeded with an OK for each line of the batch file.
Reboot and reinstall service pack 3
Posted in General Computer Knowledge