Ok, I decided to change my icon pack today and ran IconPackager. After applying the icons I continued working, but some icons hadn't changed correctly. I'd had that before on Win7 and usually they were fine after a reboot.
So I rebooted. And hit a bootloop. This was looping after the windows logo screen, at the logon UI screen, where the screen colour matches whatever the wallpaper colour is and the little dots are circling round, just prior to where the login screen appears.
There was no way to fix this other than restoring my drive image (which I'd luckily taken earlier in the day).
But - this is the SECOND time it's done this. The first time I wasn't sure that it was IP, but now I am. I daren't use IP to change the pack now...
