Hi Vinay,
Thanks for your help so far, however I don't believe the problem lies in windows updates. I've tried updating windows and it just says it is up to date. I also tried some of the many troubleshooters that could be related to this problem but this also didn't give any results. I followed some of the steps in the link you send me, but it just leads me to a dead end.
However I've managed to narrow down the problem somewhat and even kind of solve it:
Problem: Premiere crashes whenever I create a sequence or a sequence exists in a save file.
Non-practical solution: When I disable my Intel HD Graphics in the device manager the program works as normal. But this isn't really a solution as disabling this makes all my other programs including my webbrowser, file explorer etc. go wonky.
Maybe Premiere is using the wrong display adapter but I haven't got a clue how I'd go about changing this.
So there's still a problem but I feel like I'm getting closer to solving it, could definitely use some help and suggestions however.