hp touchsmart 520

I attempted to run a system cleaner a few days ago and when I rebooted, I no longer had access to the internet. It says thatthere is no local area connection because A Network Cable is Unplugged, however i don't use any wires...I only connect using a wireless connection. I also don't have a...

I have an Hp Touchsmart 520, which is 3 years old. For the past 4 months, several times while using the internet (Firefox), the browser says Not Responding. During this time, the computer is in a froze state for about 1-10 minutes (it varies). I also notice that other programs that i may have...