Here is my shot at using the forum. The following is my summary of a problem that just appeared a week ago when I got home. I leave my Mac and Parallels running during the day. They are set for auto updates. I have tried to use the format suggested in the sticky message. And a search didn't turn up much, but then I am not even sure what to search for. I suppose I will invest in a pay-for-service call if no one has any ideas. Here are the details: Problem: During an auto update when I wasnt around - could have been a Windows update, a MacOS update or a Parallels update - a restart seems to have been forced. I do not know what forced the restart. When Parallels started up again, it reached the Grey window and the little rotating Windows star simply freezes. Parallels Desktop is identified by the MacOS as not responding. Forcing a quit of Parallels Desktop seems to leave some parts running as my BOOTCAMP partition does not reappear and I am unable to select Windows as the startup partition using the Startup Disk system tool. It does not even appear in the selection window. If I disable the Parallels Desktop autostart, I can restart the Mac and the BOOTCAMP partition reappears. I can then select it via Startup Disk and run in native Windows. So there is nothing wrong with the Windows partition (Vista). It still works. 1. Mac OS Version: 10.6.3 2. Parallels Build #: ParallelsDesktop-parallels-en_US-5.0.9376.599993 3. What kind of computer: iMac, 3.06 GHz Intel Core Duo 4. Total Physical RAM: 8GB 5. Hard Drives: 1 TB WDC WD1001FALS-40K1B0 6. If you are using a BootCamp configuration or not: YES 7. Did you upgrade from a BETA: NO 8. With what Build did the problem start: unsure, latest auto update probably 9. If Parallels Tools are installed: YES 10. Anything you have tried to get things working: LOTS. I ran the uninstaller that came with Parallels. Then reinstalled using the latest build newly downloaded. Same problem. I then did a full uninstall as identified on the support page. This removes credentials and requires reactivation. Did a full reinstall with a newly downloaded copy of the installer. After reactivating Parallels, it eventually it asked me to re-enter my Vista authentication. This was a bit more complicated as it required that I dig up a USB keyboard since it would not recognize by Bluetooth keyboard. Ultimately, it locked up and MacOS reported Parallels Desktop as not responding. Oddly enough, I can hear the assorted Windows boot-up sounds even after forcing Parallels Desktop to close. So some part of windows is running in the virtual machine. 11. Anything specific about your set-up you think we should know: Nothing special. 12. If you are crashing, upload some crash logs: not crashing 13. If you are getting an error message type it in and then attach a screenshot. no error message 14. If you are having issues with a specific component (i.e. mouse, keyboard, monitor) tell us what it is. No problems with specific components Bottom line is that something has changed - very possibly the upgrade to MacOS 10.6.3, or possibly the latest Parallels 5 update has a problem such that things are incompatible. Any suggestions?