can't install safari or itunes

(1) Download the Windows Installer CleanUp utility installer file (msicuu2.exe) from the following Major Geeks page (use one of the links under the thingy on the Major Geeks page):

http://majorgeeks.com/download.php?det=4459

(2) Doubleclick the msicuu2.exe file and follow the prompts to install the Windows Installer CleanUp utility. (If you're on a Windows Vista or Windows 7 system and you get a Code 800A0046 error message when doubleclicking the msicuu2.exe file, try instead right-clicking on the msicuu2.exe file and selecting "Run as administrator".)

(3) In your Start menu click All Programs and then click Windows Install Clean Up. The Windows Installer CleanUp utility window appears, listing software that is currently installed on your computer.

(4) In the list of programs that appears in CleanUp, select any Safari entries and click "Remove", as per the following screenshot:

Quit out of CleanUp, restart the PC and try another Safari install using a SafariSetup.exe downloaded from the Apple Website:

http://www.apple.com/safari/download/

Does it go through properly this time?

🙂 You're welcome!

Perhaps rather than a registry scan, let's try a malware scan.

Download and install the free version of Malwarebytes AntiMalware:

http://www.malwarebytes.org/products/malwarebytes_free

Update your MBAM definitions and then run a full scan of the PC. (Takes about 2 hours on my Lenovo.)

http://www.malwarebytes.org/mbam.php

Does the scan find any infections?

Okay ... I'm afraid we're getting out beyond my fields of competence now, Wynn.

It might be worth checking in at the Performance and Maintenance forum at Microsoft Answers. (Fingers crossed that should get you on the radar screens of the right sort of advice providers.) Here's a link through to that forum:

http://answers.microsoft.com/en-us/windows/forum/performance