I need help, I am very worried. With Firefox opened, my computer froze completely (never has done this before) and I was forced to do a hard reboot. This happened just before I got a new ethernet cable and changed it, when I plugged it was fine, but shortafter, the computer froze completely. And I have no idea why, I ran MemTest, storage tests, CPU ans GPU tests and no freezing or errors. Ran a couple of storage benches with HDTune, decided to run PassMark and Userbenchmark tests, nothing, all with good results. Could this be related to the ethernet cable change, Firefox opened or something like that? And I have no idea if my PC will do this again, is there any "test" that could truly test this somehow? I am running Windows 10 1809, fully updated. Thanks in advance!