I have a Toshiba Satellite L555D-S7930 laptop, which randomly takes about 1 minute or more to pass the Toshiba splash screen 9where F2 and F12 are available). I ran several diagnostics and all came back OK.
This happens randomly, either running on battery or on AC.
I already reformatted the laptop and Windows 7 run perfectly.
I also changed the BIOS to load the defaults...