A couple months ago i upgraded to 8.1 and since then, before the lock screen, a little blank screen pops out, this lasts like 10-15 seconds every time. Also there are moments when this doesn't occur. I can use my computer fine, but, i wonder how can i fix that because sometimes, when i'm in a hurry, this seems an eternity for me.
Also, thanks for putting time into reading my post.
