I have Windows 7 home premium, I'm having problems restarting. It says Logging off...but nothing happens and I end up holding the power button down to restart that way. This has been going on for at least a couple of weeks, but I've been too busy to mess with it. We've recently moved the computer from downstairs to upstairs. For a couple days after moving the comp., the battery backup was shutting the computer off by itself. The Backup battery isn't doing that anymore, but I still can't restart. Here's a copy of the minidump file.