Hi everyone, actually my problem is very similar to PeterB23's post but different in some ways. Let me try to explain what happened when i tried to install Norton Antivirus 2012.
As usual i put the Norton CD to my Cd-rom drive and started the installation process. The wizard spotted the previous version of Norton (which was Norton 360 w/expired product key) and started uninstalling that one.
After rebooting the CD-Rom Drive option dissappeared from My Computer window. So it became impossible for the installation process to continue. I tried updating the driver of cd-rom but non-sense.. I tried a system restore, after that the CD-Rom became visible and i was able to complete the installation process of Norton Antivirus 2012, but i spotted that %95 of my Program files had gone/dissappeared (the shortcuts were there though)!!! There is a No Name Folder in My Computer window which i cant access..The worse thing was my Outlook (my heart of business) was not working!!
What i did after that disaster, was to rollback the system restore process. The first thing that i've checked was no name folder and i am relieved it dissapperared, However now i am in a point where my cd-rom is not visible, my outlook is barely working (though i can send/recieve hotmail and can send google mail, i cannot recieve any google mail,), my internet explorer is constantly trying to rollback some adobe plug-ins in each start-up..
I am recently in a stiuation where i am afraid to check the other programs, whether they are working properly or not..