What is Crash Dump?
Crash Dump is file windows create it when it give you the Blue Screen of death Error (BSOD)

Basically Blue Screen of Death is just an Error so windows creat file called Minidump
it’s located in this path
C:\WINDOWS\Minidump

so if we need to know what cause this Blue Screen of Death Error we need to Analysis the minidump file

to do this we need first to download and Install Debugging Tools for Windows
this can be download from here

After installing Debugging Tools for Windows we need to defined the symbol path

To enter a symbol path in WinDbg

1. On the File menu, click Symbol Path.
2. In the Symbol Search Path window, enter the following:

   “srv*c:\cache*http://msdl.microsoft.com/download/symbols;”

then open file menu and click open crash dump…

it’ll take few second to analysis the crash dump , after that you’ll get the error report and what caused this BSOD

so let’s take look at the last few lines , you can see clearly this line
Probably caused by : bdrsdrv.sys (bdrsdrv+ea6)
ofcourse you going to something diffrent bdrsdrv.sys so all you have to do is google it till you find the solution

in my cause bdrsdrv.sys is what caused the Blue Screen of death, and after i google it i found it belongs to Bitdefender Antivirurs