Thanks for responding. I am using Windows 7 home premium.
I read your post again and the issue is different than at the link I provided. As I understand it you can use LR with specific changes to your Preferences & Settings and they "stick" for a few months. At some point LR asks you to renter your serial number and appears to reset its preferences file to the defaults settings.
The most likely cause of this issue is logging into Windows after a system Shut Down with a different User Account name. I just tried it with my Windows 7 Guest account login and the first thing I see when launching LR is the Adobe registration and serial number entry screen. Make sure to use the same Windows login account when working in LR and this issue should stop.
Thank you. I think I understand what the issue is -- after a recent lightening issue, my computer does not shut down properly (it just restarts), so occasionally I cut power to it (like when I will be away for several days). I suspect the problem relates to this and is happening after turning on the power to the computer after it was disconnected without being shut down properly. It's obviously time to upgrade my desk top, which should eliminate this issue.
Thank you. I think I understand what the issue is -- after a recent lightening issue, my computer does not shut down properly (it just restarts), so occasionally I cut power to it (like when I will be away for several days).
That's a tough one to troubleshoot since numerous things can cause this to happen, including damaged components (power supply, motherboard).
1) BSOD during shutdown will cause the restart. Try this to determine if that's the cause:
2) BIOS setting corruption will do this as well. How to reset your BIOS to it's default settings:
3) Driver issues....lot's of possibilities and very hard to fix.
4) Buy a new system higher-performance system.