15 R3, powers on but screen wont turn on

Leading up to this I have had:

• warnings about my intel SSD potentially failing 
• 3 blue screens in the last 2 days
  • MEMORY_MANAGEMENT
  • THREAD_EXCEPTION_NOT_HANDLED
  • DPC_WATCHDOG_VIOLATION
• the last blue screen froze at 0% so I had to power it off manually (which probably corrupted the OS)

Ever since then it will not boot and the screen won't even turn on even though the laptop is clearly on and fans are whirling.  I got some kind of Dell Support Assistant diagnostic to show up on the screen (I don't know how) that just ran a test of the RAM and found nothing but said 'No bootable devices found' at the end with only a 'Shutdown' option.  I can't even get the BIOS to show up (I've tried F2, F12, Fn).

Don't know what to do.