I know how this feels
I had a similar problem with Linux on my Vaio some 10 years ago. One day, it just randomly started freezing. Sometimes more than once a day but sometimes a whole week would go by. There was no rhyme or reason to it. It drove me crazy and at one point, I swore blind it was the graphics drivers and said some rather silly things in a Mesa bug report. Eventually I somehow got in touch with someone with the exact same model and within days, they realised it the was ACPI driver for the CPU. Sure enough, I blacklisted that and all was well. Turns out it wasn't Linux's fault though. When I later tried Vista on the same machine, it would barely even make it to the first setup screen before freezing up hard. This was exactly the same problem and I had to disable the equivalent driver there. That wasn't easy. I think I had to modify the ISO and then intercept the install to disable it again after the first reboot. If only I'd known how much Vista sucked beforehand.