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I am new to Ubuntu and made the mistake of removing Windows 7 64-bit from my Toshiba Satellite P755D-S5172, and only installed Ubuntu 13.04 I believe from a jump drive.

I want to remove Ubuntu, Install Windows 7, then reinstall Ubuntu after.

The issue I am having is when I load my Windows install disk, or I put my flash drive with Ubuntu installer on it, do a restart, and I can not enter my bios to choose where to load from. I have tried all the Function Keys and as well as many others, but all I get is a black screen when I hit a button. If I hit it again the screen goes back to the Ubuntu Loading screen. I may get a few lines of code that are checking Pass/Fail. but that is it...

Any help on how to get into my bios would be grateful! Or how to remove Ubuntu so I can reload Windows


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On my Toshiba S855, I can hit F12 immediately after the vendor logo displays for a second (about 6 seconds after the start button is pressed). –  ubfan1 Oct 17 '13 at 20:05

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