It's been 3 weeks since I bought my PC, and yet I still couldn't solve some problems since day one: My keyboard (sometimes my mouse as well) lags when I play ANY game, be it Fez or Portal 2. It only happens when I play a game. "Lag" here means delayed and/or missing inputs. This is very annoying because it screws all my games. Also, I'm using a wireless kb/m combo, batteries are still full, and I'm only ~1m from my PC. Occasionally my PC would shut down randomly, without any error message, as if someone just pulled the power cord. After this it would take about 30 mins before I can turn it back on. Happened 5 times in the past 3 weeks. I'm running Windows 8 x64. Most drivers are up-to-date (GPU, Intel drivers, ...) If anyone could suggest a solution I would greatly appreciate.