My laptop keeps crashing and it started after I upgraded to Windows 10. I have re-installed, installed all the patches, updated all the latest drivers (it think), but it consistently send me to BSOD. A lot of time after BSOD, I find that Windows Defender is disabled, so my guess it that is the issue.
I spoke to Microsoft, and they say that I need to re-install. They did not even look at my logs.