Boot Problem

Good morning/evening everybody,

I have a Satellite C855D-S5106, and everytime I turn it on, the screen goes black and it takes about a minute to get to the Toshiba Leading Innovation Screen. After that, it boots fine into Windows.

I have already tried the following...

-Another HD
-Memory
-Bios Flash
-Took out the Battery
-Boot without HD
-Set BIOS to Default Settings
-Took out CMOS Battery

Nothing has worked so far.

If anyone has any fresh ideas or knows what the problem could be, I'd appreciate the help.