jp831

Hi, I'm experiencing a lag that has been occuring for the last 2 weeks. It all started after I have bought a new internal hard drive and tried installing it. After experiencing the lag, I decided to take the harddrive out and tried system restoring. The lag still wouldn't go away. The lag occurs when I'm watching a video clip or playing a game. Sometimes, my whole computer lags too. The lag occurs frequently and shortly. The lag lasts about 3 second and it's really annoying. I've checked for spywares, viruses, and even did a disk cleanup along with defragmentation. Nothing seems to be "unplugged" inside my computer. Also, when I look at my CPU usage percentage, it spikes up from 1% to 80% very often. I'm no pro in computers so I really can't find the problem. I'll appreciate greatly if you guys can help me out.