Adrian wrote:I can't post system information because it won't boot.
You don't have any flashdrive to boot from and post the info or it doesn't boot from a flashdrive either? You could also tell us what video card you have and what driver you use if you know (like: "I remember I installed Nvidia proprietary driver") it's really not much info to troubleshoot/fix things remotely if you don't give us the basic info.
If you boot from flashdrive you might also be able to examine logs to see what and where goes wrong see what updates you installed lately (in case those caused this issue).
I have no flash drive to boot from. I have Intelgraphics.