Blue screen indicating FACEIT.sys
If you are having blue screens, you need first to test your RAM with memtest86 to make sure they are not caused by faulty RAM modules or other hardware issues, which is what happens in most cases. It is generally recommended to leave it overnight as it may need multiple hours to find errors. If your PC is overclocked, please try to disable it temporarily to check if this might be caused by an unstable overclock.
If the blue screen is preventing your system from starting, please go in safe mode (F8 on Windows 7, or Troubleshoot -> Advanced Options -> Startup Settings -> Restart and then press 4, on Windows 10). After you are in safe mode, go to C:/Windows/System32/drivers and delete FACEIT.sys.
If no errors are found, then please open a support ticket with the crash dump file from C:/Windows/Minidumps attached.