I have problems installing Creative Suite Standard 5.5 on my brand new computer with Win 7 home premium.
Hints about restarting or removing file from Registry don't work as there is no such file (inProgress key).
What else could I do?
Start over. Run the Creative Suite Cleaner Tool, then try again. Also pending installs can come from otehr programs, not just Adobe software. Let them finish. If that's not possible, terminate all instances of setup.exe and msiexec.exe in your task manager before runing the Adobe install.
What is the exact error message you are receiving when you try to install? Have you tried running the Adobe Support Advisor - http://www.adobe.com/support/loganalyzer/ to automatically review your installation logs? Alternately you can follow the steps listed in Troubleshoot with install logs | CS5, CS5.5, CS6 - http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5 -cs5.html to manually review your installation logs.