it is called the motherboard.
flat case that holds computer componets or if you're trying to solve a certain crossword puzzle, try "Desktopcase". (AS3)
a flat object that holds computer data is a disc
A disc is a flat object that holds computer data.
A disk
flat Stanley
lower case "b"
Sounds like you have a virus in your start up or registry, but in case this is a portable computer, the battery could be flat.
A disk!
Stage
A stage is a flat surface where the slide is placed and Holds a lens
A stage is a flat surface where the slide is placed and Holds a lens
the deck