Why isn't my laptop connecting to the internet?

Laptop having problems connecting to internet?

• For a few months now, my laptop struggles to get an internet connection. Sometimes it will work fine, but other times it will only work for a few minutes, then the little yellow exclamation point shows up on the network connection icon in the bottom right on the toolbar, and I have to disconnect from the connection, then reconnect, and even then it sometimes only works for a few minutes before I have to do it all over again. It's not a problem with the internet, because there are two other laptops in this house that function perfectly fine, so I assume it's a problem with my laptop. What could be causing this and how can I fix it? I tried to troubleshoot the connection but it said no problems were detected, I defragmented, did a disk cleanup, and a virus scan. I have a Sony Vaio, less than a year old (please don't tell me to send the laptop back, I'd like to fix the issue myself if possible), Windows 7. Connecting to the internet via wifi.

• Answer:

  This could be the technical issue... Report it to the service to get things fixed.... Good luck!