Hey guys, been a while since i last posted. Anyway, I installed Win10 preview when it first came out and reverted back to Win 8.1. Now I have upgraed again to Win 10 TP Build 10041 but it looks like it crashed my surface pro 3. I did an upgrade not fresh install. Right after I log in, the screen goes back and forth like it opens start menu then closes it, or explorer is crashing, all icons in desktop disappear then reappear. I cannot open anything as it looks to go into a cycle of reloading explorer.... Any advise would be great. Anyone else encountered this??