installing XP service pack 2

Have XP home edition, with service pack 1 installed.
When installing service pack 2, it will download, and then start installing, when it reaches about 50%, it says access denied. Click OK. Do that and it unistalls it. Have tried this twice. Have run Anti virus, and ad-aware. Same thing happens.
Looked under setupapi file: found:

HKCR\.bmp\.persistant handler
EO 33 error 5 Access is denied

007 Deleting registry key HKCR\vnd.ms.radio
error 5 Access denied.

Now what?

serena1967

 

There is some discussion of the problem here, you will have to read the whole thread, but evidently the issue is with the "permissions" assigned the registry key indicated in the error.

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&c2coff=1&safe=off&th=acc375a851c714d6&rnum=1

Right click on the key and select "permissions" to see what is there. Make sure you are logged on as Administrator when doing this, or installing SP2

 

Consider it an omen, once you do get it installed the fun will begin.

 

You might also follow this link and compare programs on your computer with the Microsoft list of programs that conflict with SP2 http://support.microsoft.com/default.aspx?kbid=884130&product=windowsxpsp2