Pl identify which version of Windows - certified/supported versions are listed in the Install Guide.
If you are connecting to the Internet via a proxy server, enter the details of the proxy server, else skip this portion.
I'm installing on laptop Oracle 11g R2 Installation on Windows 7 (64 bit) it was asking me to enter Proxy server details, since I'm not connecting internet with proxy I've skipped the step. But after that when reached the "System class" there was two radio buttons 1)Desktop Class - which selected default and clicked on Next button, then it disappeared. Looks like process was stopped. i have looked it in Windows Task manager it is not there.
Is any one know what is going on?
It should not disappear. It should go to the next stage. I just did yesterday.
Are you choosing to install the software and create the database ? If so, try choosing to only install the software first. This issue has been discussed before