That may be a bit lost on our younger viewers explaination

Staffy, as ever, best to get a second opinion, pop by a fast fit place, they will do all manner of free checks on the chance that they can flog you something, get them to do all the testing, you are under no obligation to purchase anything from them unless you agree to do so.

Doing a diagnosis on this new fangled interweb thingy is very difficult, we can only give you an opinion based on the balance of probability which is linked to personal experience, in other words, I'd hate to give anyone advice that would be likely to cost them unnecessary dollar, there have been several good calls on here, but you cannot beat getting the thing up in the air & having a jolly good poke around to assess the situation.