Brand: Compaq Presario
Model: V6444US
OS: XP sp3

Problem:

When the computer was turned on this morning the entire screen (from boot start) was split into tiled copies of iteslf. Even when I go into the BIOS screen, it too is split in tiled copies. When Windows boots, the entire desktop is tiled. Each tile has it's own cursor, task bar, desktop icons, and programs. All tiles work simultaneously (not individually), so when the mouse is moved, all cursors move the same direction and click the same icon in each tile; when a program is opened, it opens in all tiles. No new programs have been installed and no updates occurred since last use (the night before).

Attempted fixes:

1. simple reboot - no change
2. system restore - no change
3. updated graphics driver - not needed
4. virus scan - clean

Does anyone have any clues about how I can remove the split and make it normal again (short of complete reinstallation)? Any help is appreciated thank you.