Client Crashing

I keep getting a Disconnect report over and over again. To be far It been happening all the way back around the US LCS Finals. I kept getting this and I was hoping it would end soon. Cause I never even had a dc unless Power went out or a Major Storm. Now it keeps as of today it won't stop and I keep getting crashes. I have Repaired 4 time, and yes 4 time. Also Reinstall it 2 time, and yes two between this times. I did all this sense the US LCS. Thinking at some point it would be cleared. I even gone as far to upgrade my Internet for some reason sense then has not changed. Even before that I was fine. I have ran Virus scans even a Boot up virus scan done. Nothing and I do remember it was near the time Panda Booster was ending. On that note I couldn't no longer browse on-line at any browser on any site. With out being DC completely. Please Respond to what I can do, but it keep crashing now. Some are bug with . Fix this bug