Question: My computer screen has started to wobble at the sides, how can I fix it or do I need a new monitor?
Answer: There are a couple of things you can try before going out and getting a new monitor. Make sure the connection at the back of the computer is secure. If you feel comfortable taking the case off of the computer you can reseat the video card as well. Make sure the computer is off and unplugged first.
Have you moved the monitor by any electrical devices or put any electrical devices by the monitor? Some electronics will cause your monitor to do strange things when they are too close.
One easy test is to borrow a monitor and see if it does it on that one. I'm thinking your monitor is most likely going out but you can try the above suggestions first.