Inaccessible boot device BSOD chkdsk /f does not work.

Hey guys, My computer was working fine for most of Saturday PM until the screen on my computer started flashing on and off so I could barely see anything (March 20th around 5-6 o'clock). I could move the mouse but I could not click the start button shut down. Instead I held down the power button until my laptop powered off but when I turned it on again the purple light that tells me my disk activity would stay lit for a second or two and then flash on and off and then it would go off. I could see the Alienware logo and spinning gears but that was it and then I got a BSOD with the error message "inaccessible_boot_ device." Then my computer automatically restarted and said "Preparing Automatic Repair" below the spinning gears and then I couple of seconds later it said "Automatic Repair could not repair your P.C" you can try restarting your P.C. This will fix most problems or go to advanced options. The same thing happened with HDD light again. Then I clicked on advanced options and went to the most recent system restore (March 19) and then I got the error message saying "System restore did not complete successfully. Your computer's system files and settings were not changed." I also got the error code "0x80071a91." Then I clicked close and then I tried it again with a later system restore but the same thing happened again. When I got back at the recovery options I tried to boot into safe mode with networking and the same thing happened again. The last thing that I tried was to go into command prompt in the recovery options and run chkdsk but then it said windows could not run disk check on this volume because it write protected. I tried running chkdsk f/ too and that did not work either. I even tried typing c: to select my C disk and running those two commands and that did not work. I tried running disk part and then list disk and it found the drive and it said that it was online. Then I ran select disk 0 which is C disk and then attributes disk clear readonly and it said "Diskpart failed to clear disk attributes." After that I ran the attributes disk command and next to "Read-only" it said "no."  iI pressed f12 on startup to get to the boot device selector and pressed the enter key on diagnostics. I ran the full diagnotics check and it said that my computer passed all of the tests. I have even reset my bios to the default settings incase that was the problem and that did not either. Thanks guys, I hope you can help me out.

My Computer Specs

Computer Model: Alienware 13 R2

CPU: Intel core i7 2.50GHz  6500U

GPU: Nvidia GTX 960m

HDD: 500 GB ST500LM000-1EJ 500GB

RAM: 8G DDR3 1600 MHz