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Steam closes without warning - Win7 RC...
OK, so I just upgraded from Windows Vista Business x64 to Windows 7 RC x64.
I didn't do a clean install, just did the upgrade method.
Steam runs fine but as soon as I try to launch any games, it closes down without warning and with no error message of any kind.
There was no problem in Windows XP Pro, Vista Business or Windows 7 Beta with Steam.
I've uninstalled and reinstalled several times, to no avail.
Is it caused by using the upgrade method, over a clean install?
I don't really have anywhere to backup my 100GB+ worth of data at the moment so I was hoping for a quick method to install Win7 RC.
Any help or insight would be greatly appreciated...