The boot selection failed because a required device is inaccessible.

okay I have a Dell XPS 8700 i7-4790 CPU@ 3.6GHz with a GeForce GTX 745, I will be updating. I had a Windows Update pop up to download so I did and sent it to the background. I messed around on Facebook and YouTube when the download was finished there were 20 updates and all I saw when the first window pop up it wouldn't let me see any critical ones. So I reboot my computer. My max Resolution is 1440x900 and after I got finished waiting on the downloads to install I got back to browsing only this time my Resolution was 1600 something x 1000 something All my desktop shortcuts were jumbled and a lot smaller so I arranged them and went back on Firefox and kept doing what I was doing until it hit me let me see how my game plays (Heroes & Generals) the screen was bigger of course so I went to lay a few matches and got a Shader some number wasn't on my video card. I know it has like 348 shaders on it. I cut the game off and went to Widows Restore to go back to later date that it as saved When it stops and Rebooted I got this. and still getting it hitting F12 Because I could reboot in safe mode it would fix it but there was no choice to choose it just a Click here to repair problem or Start Window Normally. I choose to repair and get this
Status: 0xc000000f
Info: The boot selection failed because a required device is inaccessible. Next I try the Normal Boot I get a black screen I was so mad I went to bed with on that black screen all you can see is the mouse Pointer.
When I ordered this $1200 Dell with Windows 7 Professional I get a Windows 8 or 8.1 boot disc?? WTH. I am on my mamma's Laptop which I hate because I would rather have a Desktop. She ordered the $200 one with no disc drive to even burn a boot disk. I have an 8GB Flashcard and that's not anywhere large enough. Okay I just lucked up with F12 says Boot mode is set to Legacy; Secure Boot; OFF
She does not have the stuff I need to send a picture. This is going to take some time but I will get the picture. Sorry all my Computer info is in a txt File on my computer desktop. My printer quit about a year ago I guess it was it's time I Phone to take them and s bought it before 2005. I hope these pictures help I had to use my mamma's iPhone then send them to her self on Facebook and save them to Picasa 3 then add them to my Photobucket. So here's what I am seeing right now on my Desktop I am trying to fix.Sorry if they are too big I don't have the graphics software like on mine

13884336_1765916843694212_1378489273_n.jpg

The Jet Transcend is a 1TB External Hard rive I ought to save some stuff off and older computer to install on this new one,well bought it Dec 2014 so to me it's still new. I am going to mess with it a little while longer but if this helps anyone see a problem please let me know

Hello and welcome NA mate just maybe a quick fix go into safe mode and do a system restore to before those updates. Let us know how you go and see my pic if you are offered only one restore point.

Well as a general rule safe mode is accessed by tapping F8 at power up not F2 or 12 unless Dell have some specialized stuff on their computers. If you can get into that then we might have a chance of doing something with a system restore.

Plus please do this with only the C: drive hooked up.