okay well i already had riva installed, i enabled all the options and whatnot but got no OSD of any sort in AC or Halo 2. This session, however, when trying to get riva to work, I ran Halo 2 and crashed with the Red Screen, then after restarting DreamScene came up with an error and my background went black. This usually happens but I make my background my usual dreamscene background and THEN play a game.
This time, I left DreamScene alone and started AC, played for 5 minutes longer than any other time, and then got the same screen, only in blue!!
I tryed ALT+TAB and ALT+ENTER as usual, and it worked, but the only thing my screen showed was BSOD, which is new:
then on my next restart after that windows showed me this, two images, one scrolled down one not: