I've just finished installing IE9 on my windows 7 32-bit machine. It appeared to complete ok- no errors or warnings in the event logs. However when I try to run IE9, the window opens, the blue loading circle spins, "not responding" appears, then the window shuts without anything appearing in the browser window. My machine is a decent spec, and I've had no problems with IE8, or any other browser before. Here are the things I've tried which didn't help: Installing IE9 via Windows update, instead of manuallyRunning in "no add-ons" modeDisabling all add-ons manuallyRunning the OS in safe modeTemporarily disabling firewall/antivirusResetting IE settings in "Internet Properties"Ticking "Use software rendering instead of GPU rendering" in "Internet Properties"Re-registering dlls Running program as administratorInstalling SP1Installing all critical/important windows updatesLogging into Windows as different userDownloading the installer using a different machine (in case installer was corrupt) I am now officially out of ideas. Anyone got any more?