My MP830 Canon is not powering up anymore??

Does anyone have or had this printer or a Canon with a similar problem?  I was using my computer and i DID turned the printer ON last night and about 20 minutes later when i tried printing the printer was "offline" then i looked at the printer it was OFF, i tried powering it off for 20 minutes and did nothing.  I left it off all night and it did not power up this morning.

Any ideas why this might be happening?  Thanks.