I have Win7 x64 installed, and it's been working fine for weeks. Starting today, however, after I log in it just hangs indefinitely. Well, to be more precise, It's perfectly fine until I click something. I'll open a folder, and the mouse will just change to the loading circle, and nothing happens. When I open task manager, the window comes up, but none of my mouse clicks will register, and the icon for it in the tray will show 100% cpu usage. So I figure, I'll boot into Safe Mode and get rid of the last couple things I installed. Safe Mode shows itself loading all the drivers it needs perfectly fine, then the screen goes black and my computer restarts. Not good. Windows 7 automatic repair, and the repair from the installation DVD both report that they couldn't fix the problem. Any similar experiences, or any idea how to fix this without a complete reinstall?