Just wanted to post a reply to this message since I was having this same problem and tried all of the suggestions that I could find and none of them worked for me. I continued to get the blank screen after selecting any of the installation options.
I finally went into text installation mode and it also hung, but I was able to write down the point at which it hung. The last message was "NET: Registered protocol family 2." I googled this and found a bug report on the OpenSuse website which provided a work around. The work around is to simply type "maxcpus=0" as a boot option. This worked for me simply using the Installation option. I am assuming that some may have to select one of the other options and adding this to the boot options.
Link to the bug report: http://lists.opensuse.org/opensuse-b.../msg02149.html
By the way, I went into the bug report and it states the issue is resolved; however, the work around worked for me!
Hope this saves someone some time!!