I have recently moved my MB + CPU + M.2 SSD + RAM (without disassembling) to a new PC case and installed a GPU (GTX 1070). Afterwards I started experiencing some weird issues with Windows 10 (below). Unfortunately the issue didn't disappear when I disconnected the GPU and used an integrated one again.
after 5-10 minutes of work all but the active app become not responding however they still refresh their content. I cannot click on the taskbar nor the start button but pressing Win key opens the menu. Several apps that are open refresh their content but their menu, buttons etc are all not clickable (as if the app was inactive). Only 1 app is responding (the last active one). After a while other apps start responding but then again freeze (and possibly a different one is the only that responds to clicks).
How should I search for the source of the problem?