I had to sfc /scannow because some 7 TSP icon packs messed stuff up - my Volume Mixer no longer opened, my Notification Center no longer showed the "banners" and desktop + taskbar icons randomly refreshed, driving me nuts.

I now found an icon pack that behaves, but I can't get rid of this blue bar at the top of Windows Explorer. I've installed/uninstalled OldNewExplorer twice, no change.
I'm like 99.99% sure that bar wasn't there before ... so I want to get rid of it again - HELP