Hey im doing the RegScrub thing now. I hope this works. Also the problems it says are pretty all much the same it says the compuert says that the file soes not exist. Ill tell you after how it went.

 

Firstly i do not recommend using Norton it is a bit or a resource hog and does not have a very good detection rate, if you wish to change i would recommend ZoneAlarm (Firewall) and AVG Free (antivirus)

ZoneAlarm free (Firewall)
http://www.zonealarm.com/store/content/catalog/products/sku_list_za.jsp?dc=56pus&ctry=GB&lang=en

AVG Free
http://free.grisoft.com/

Ok not sure if this will help will all your problems but you may need to first clear all your temp files and cookies, use ATF Cleaner

ATF Cleaner
http://www.majorgeeks.com/ATF_Cleaner_d4949.html

Select all the boxes and press clean..

restart the comp and try installing windows media player again.

Some advanced stuff now

goto START >> RUN >> Type :- Msconfig ~ press enter

under the startup tab look for anything like Sireman.exe if you find it, disable it, also disable windows messenger by removing the Tick or Check in the box, press apply/Ok and restart.

you could possibly have some registry issues, and if you want to clean the registry i would recommend using RegScrubXp (some people do not recommend the use of such software but i do, its a personal prefernce)

http://www.sofotex.com/RegScrubXP-download_L7528.html

1) press "let RegScrub find problem"
2) Select all problems
3) Fix all problems

let us know if any of the above worked otherwise myself and others will try helping.