Hello guys, My Acer Aspire 7520G-402G32Mi laptop freezes sometimes, with several Linux distros, and therefore did I reapply thernal paste and clean the fan. This was to no avail so I decided to try to run a memory test. I believe I forgot to mention btw, that before I did the thermal grease reapplication, for a couple of times it took several repeated attempts to boot (after pressing the power button, it went on for a sec, off, on for a sec and after a few times it finally booted). This issue seems to have disappeared now though. Memtesy 86+ gives this weird message after a couple of minutes: Could this be the motherboard? I hope I express myself clearly enough, and wish to know your thoughts please.