The problem was my freaking Spybot SD client asked permission to change the registry, the problem was I was too much confused because there were no buttons to confirm whether to cancel or allow the certain alert. Then I accidentally clicked the "Remember this Setting" so now, that alert box is not coming out anymore and now I am stuck with a Windows media player installer that doesn't work. Crap.
Does anyone know any other ways to troubleshoot and go around this freaking problem? Or maybe someone can help me UNDO the SD Client settings so that the dialog alert will go back popping again. Any options would really be helpful, just dont let me reinstall XP.
Also, I tried it in the CMD prompt to start and stop cryptsvc and that command ren %systemroot%\system32\catroot2 oldcatroot2 something command and all I got was Access Denied. Also, I tried sfc /purgecache and sfc /scannow and it doesn't help much either.
PLEASE HELP ME GUYS!!!!!