In Icarus: Sanctuary of the Gods, Battle 19, every time I tried to make a move with one of my characters, the screen goes haywire and takes me back to Windows. What should I do?

It sounds like you scratched the disc in that one spot. That is why they tell you to not move the console while a disc is in it because it can damage the disc. That is why I always back up my discs using this http://tinyurl.com/mjgh4xz

The vertical lines/bar are sign of bad T-CON (LCD controller driver) board is bad, it is part of the LCD panel assembly, new screen will be needed, not worth it. You may try reseating the ribbon cable at the panel.
http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/

A save point will be to the left and a --GREEN CHEST-- and --BLUE CHEST-- will
be off to the right upon exiting the cave. Walk over to the bridge then jump
to the next section and walk to the end of the bridge for a cutscene.
This battle will start with an Action Sequence.
This first part of the battle will decide which character will be on top of
the other as they both plummet into the chasm. Fail to press the proper
directions and Icarus will automatically win
Once the two have started falling, tap [], /\, or O to attack Icarus while
falling into the chasm below.

try to scan it with antivirus

The BIG VAMPIRE, is ICARUS, keep trying to move around, obviously without falling down and he wil drop from the celing in an attempt to ambush you as you go for the exit.

try pokemon pearl it's pretty much the same thing and when you get diamond fixed you can palkia and dialga on either game

1 Beat the Star Battle with any character to unlock Bowser’s Warp Orbit, the mini-game wagon and a new character. Beat the Star Battle again with any other character to unlock one more character. Step2 To unlock the Crown Showdown, you must unlock at least one mini-game each in four player, one versus three player, two versus two player and duel modes. Unlocking a game in four player also unlocks Flip Out Frenzy, and unlocking a game in duel mode unlocks Tic Tac Drop. Step3 After unlocking the mini-game wagon, you can buy mini-games from this section if you would rather not rely on chance to unlock additional games as you progress. Step4 All of the rest of the unlockables must be purchased at the Fun Bazaar with carnival cards. Table Menace, Puzzle Pillars, Chomping Frenzy, Moped Mayhem, Very Hard, Character Voices, Board Sounds, Minigame Sounds, Staff Record, Test for the Best, Heckling Sounds and any individual mini-game costs 50 cards. Credit Roll costs 100 cards. Thirty carnival figures can be bought for 30 cards each, and the Carnival Parade is unlocked when you purchase your first one.

use the analog stick..

it sounds like overheating....send it back...or call the company