I'll get down to it:

My netbook is an Advent Milano, and was bought in December 2009. A few months ago, around April, I began to have problems charging it (it would only charge when held in a certain position, would turn off etc). I at first believed this to be due to the charger port, as I often put unwise pressure on the charger when it is in the port and thus perhaps damaging it. However, after getting the charger checked out, I was told that the charger itself was completely fried and that was what was causing the problems. Unwilling to buy a new charger, the guys who identified the problem lent me a charger that was not for the netbook. It was the same voltage and they said it would be fine to use, even though the head of the charger (the bit that goes into the port) was smaller. Indeed, it was fine for a while, except for the odd times it fell out. Then, just a month or two after that (Juneish), the same problems arose. It refused to charge unless the charger was wiggled in weird positions, and I ended up having to push the charger so hard to the left that I'm pretty sure it must have damaged the netbook, but at least it worked. However, it has been getting increasingly difficult to position the charger correctly and to make matters worse, when I try to run the netbook on its batteries, it will suddenly turn off without warning by the time it reaches around 80% charge.

I understand there are probably multiple reasons why this is happening, and that my explanations might not be the clearest, but I am desperate for a solution. I haven't got a lot of money to splash out on a new netbook until next year, so a temporary solution would be fine. And if you could estimate the cost of a repair (I'm in the UK), I'd really appreciate it!

Thanks for your time :D