How often does the BSOD happen when starting up the computer? If it is a very rare event it will be difficult to track down the fault since you can't reliably verify that any changes have made a difference. For a lot of hardware problems I find the various tests such as HDTune, memtest, Furmark can often give a pass result, presumably because the exact conditions to trigger the fault are not replicated by the test. Sometimes the only reliable way to test is to swap components for known good ones and see if it makes a difference. Reading through this thread I see that the SSD has been highlighted and from the last dump I see that there was a 1 bit error. Just a single bit has flipped, i.e. a 0 changed to a 1 or vice versa. I would try a different SSD and then if there are still problems go back to the original SSD and try changing RAM. It's a tedious process and is why hardware faults can be so difficult to pin down.