I just got out of the malware removal form after being infected. A few times my mouse hung and once while watching netflix the screen went blank and the sound went weird and nothing would respond. I'm not sure if the computer is unstable or if this is sort of just a random thing. Any advice? It's a desktop with an Asus P8Z68-V LE motherboard and an Intel Core i5 CPU running Windows 7 64bit and Avast Internet Security. It has 8GB of RAM.