Currently BYU is #16 and playing unranked, 2-2 Notre Dame.
Games of note in the top 25 (most likely cases for teams ahead of BYU to lose or teams behind to get a marquee win that could bump them ahead)
#6 USC vs (#26) Washington St
#8 Tennessee vs #25 LSU
#10 Penn St vs #4 Michigan
#11 Utah vs #18 UCLA
#14 NC State vs (#28) Florida St
#17 TCU vs #19 Kansas
#23 Miss St vs (#29) Arkansas
Even with a win, it's tough to move up this week. USC and Tennessee are far enough ahead to stay ahead even with a loss, as is likely Penn St, given the quality of the opponent.
Utah losing would drop them behind BYU...but would probably bump UCLA over us. The TCU/Kansas winner could also jump BYU. So, except for NC State and the truly out-of-nowhere losses, there's just not a lot of chance to move up, even if we beat up on Notre Dame.
Of course it doesn't help that Notre Dame isn't great. If we beat them, they're 2-3 and considered terrible. If we lose, then they're 3-2 and back on the right track after a bad start. Not fair, but they're only considered decent if they beat us.