I have problems on my laptop in which the computer crashes. During these crashes, the screen freezes permanently and must be rebooted manually with the power button. If there happened to be sound during the crash, it would make a permanent buzzing noise until I rebooted it. I have had this problem since I got the laptop.
I have tried to examine what might be causing it. I thought it might be due to heat, but the crashes sometimes happen right after I turn the laptop on. I thought it might be due to high CPU or RAM usage, but sometimes the crashes occur when I am only watching one video while at other times, I can have loads of videos and programs running without any problems.
On average, these crashes occur once a day. I have had previous help with Dakeyras fixing a proxy issue here: