Slightly old desktop crashing periodically

I began using my ~4 (?) yr old manually assembled desktop again, & it keeps crashing every ~2 hrs. I have tried solving the issue via Event Viewer & updates, but the problem still persists with the same set of errors (events 1033 & 10016). I have tried updating DBX modules, enabled secure boot, reinstalling Windows, fixed my bootloader but nothing changed. Another thing to note, is that although I have set my pc to not shut down on system failure, it does so so I have actually not seen a BSOD yet. I am running on Windows 10 1809 (17763.4645), & my specs are as follows:
AMD Ryzen 5 3400G integrated radeon vega graphics
16 GB RAM
MSI B450M PRO-VDH MAX (MS-7A38)
1TB TOSHIBA DT01ACA100 (where C: & D: drives r located)

Help would be much appreciated tysm

The link is missing.

There are indications that your Windows license is not valid...

Code:

LocalGenuineState       : SL_GEN_STATE_INVALID_LICENSE

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thx guys