Hi, I have an Acer Extensa 2540, with Intel HD Graphics 620, CPU i5-7200U and windows 10. When I use games (light) after a while 'time my PC crashes and sometimes appears bsod:' whea uncorreactable error '. At the begin I used the tool 'BlueScreenViev' and it said me that crash started from ntoskrnl.exe categorized like video driver problem. I asked to Microsoft forum Extensa 2540 Freeze e BSOD - Microsoft Community ,and I did it but the problem PERSISTS only playing games. In this moment I thought about a possible solution, the computer starts with 4 GB and my parents have added 4 more before using it, it is possible that the RAM is not compatible and that my PC crashes while I play just because only in that moment I start to use that bank of RAM? I attach a CPU_Z file (.txt) with theinformation of my RAM, the first is the original RAM and the second the bank of RAM added. As you can see RAMs have different frequencies, it can create problems?