Hi there! Recently my computer has started to freeze a lot. It was a lot worse during the past few days but after some disk cleanup and defrag, it got a lot better. I also ran a deep scan with a full version of Advanced SystemCare 5. Now my PC has been responding a lot better. However, my Firefox now is always "not responding." It is very frustrating as it turns into "not responding" mode after I scroll down a few times. So then I switched over to Chrome. Now for Chrome, it works a lot better. But instead of "not responding" after every scroll down, it turns into "not responding" after a few page change. I'm sure this is probably not limited to just my browsers. Other info is that my desktop sometimes lag. This usually happens after I exit Firefox or Chrome when it was "not responding." Another desktop lag is sometimes when I click the start menu, the menu just pops up normally as ever, but it won't respond when I click on something. There are times when I click the "restart" button many, many times and my PC still won't restart! This has led me to shut down and start my PC via power button many, many times in the past few days. So I ask for help and suggestions! Many thanks!