BSOD with different error codes

[DW8864]

I'm having a terrible time figuring out what is wrong with my pc. It has been put together for over a year now with upgrades every once in a while but recently I have been getting crashes, freezes and BSOD.

I've uploaded the minidump and report file. Thanks for any help.

 

[DW8864]

Now my pc won't boot up any more, just a flashing underscore in the top left corner.

Any advice would be helpful, thanks.