In one of my PC, we have difficulties playing even music because apparently, my son said that PC is too full of my rubbish. I had been meaning to back-up the files and photos into my external hard drive but never sit down to do it. So, my son is terribly annoyed when his games hang halfway in his games.
He has been asking me to upgrade the system memory as well but I am not doing it. I actually do not allow him to use the PC that often, hence my delay in giving total ownership to him. As long as my files are there, the PC is mine, mine, mine. I personally do not favour giving a 12 years old a PC to himself.