Windows 7 Problem??? Fake Java Update???

So-called double post: yesterday with the Java update, I didn't get a steady window with "ok" or "next" or anything. What I got was some, perhaps, 5 flashing windows that disappeared faster than they appeared.

Well then, today I got a strangely colored window from Avast telling, there is a major security update for Avast Concerning Google Chrome. And again... no steady window, only five or so flashing windows.

The announcement windows from Avast have always been green, saying all went well with the update, lately I've got red ones, telling it went wrong, with explanation "defective bit package" or something, and clicking "update now" in that window has crashed my computer a few times. Today the announcement window was something like grayish-green, about Google Chrome.

Scanned with Malwarebytes too - nothing was found.

Weird. I've had personal attacks on me before, so this could be someone trying to hit me. But considering the many problems I've come to know, is there a bogey out there?

Generally, my PC works like a dream, no problems whatsoever, occasional BSODs have appeared lately,​ but there's no panic. Some nuisance, perhaps, but no panic.