Bug Check 0x7B: INACCESSIBLE_BOOT_DEVICE
https://msdn.microsoft.com/en-us/library/ff559218(v=vs.85).aspx
Please upload copies of your dump files as shared files (excluding any more than one month old or before you used a system restore point) to your OneDrive with a link here.
The dump file will be created at c:\windows\minidump. You may need to change your settings in Windows to be able to see the file. To show hidden files type Folder Options in the search box above the Start button and select View, Advanced Settings and verify that the box before "Show hidden files and folders" is checked and "Hide protected operating system files" is unchecked. You may need to scroll down to see the second item. You should also make certain that the box before "Hide extensions for known file types" is not checked.
What is your computer make and model? If not a branded computer what is your motherboard make and model?
Please download and run Driver View and upload a copy of the report it produces to your OneDrive. To get a report on all drivers select Edit, Select All followed by File, Save Selected Items.
http://www.nirsoft.net/utils/driverview.html
Please provide a copy of your System Information file. Type System Information in the Search Box above the start Button and press the ENTER key (alternative is Select Start, All Programs, Accessories, System Tools, System Information). Select File, Export and give the file a name noting where it is located. Do not place the cursor within the body of the report before exporting the file. The system creates a new System Information file each time system information is accessed. You need to allow a minute or two for the file to be fully populated before exporting a copy. Please upload the file to your OneDrive, share with everyone and post a link here. Reports in normal mode preferred. Please say if the report has been obtained in safe mode. The request for a copy of this file is additional to answering the question about make and model.
For help with OneDrive see paragraph 9.3:
http://www.gerryscomputertips.co.uk/MicrosoftCommunity1.htm
General notes on Understanding and Eliminating System Errors:
http://www.gerryscomputertips.co.uk/syserrors1.htm
The next time you need to Ask a Question start a new thread by clicking Participate towards the top of this page or the page accessed from the link below and click Ask a question on the drop down menu.
http://answers.microsoft.com/en-us
A suggestion if you are using Internet Explorer 9, 10 or 11.
Access your profile. Make sure you have signed in. Click on All Threads, click on the Star towards the top right of the screen (you will need to press F11 to see it if you are reading Full Screen), click the scroll to the right of Add to Favourites and select Add to Favourites Bar. Edit the long name to something memorable and you can immediately access your threads from your Internet Explorer Home Page.