Hi, I've finally taken my laptop apart and applied paste to the cpu, some other giant intel chip, some big transistor looking things, the gpu and it's 2 memory chips.
7 components in total. The heat sink on the gpu memory and the transistor look a like things was absolutely appalling, looked like that double sided sticky sponge stuff you use for DIY. Just simply rolled it off.
Also the paste used was rubbish and flaky.
I noticed that the Heat pipe was loose from the copper plate attaching it to the CPU. None of the pipes had thermal paste. I applied paste where the pipes came into contact with the copper plates. This was quite fiddly.
I Applied Arctic MX-3 To all 7 components as well.
Total disassembly, repair and assembly time was about 6 hours 30 mins.
The Laptop is now stable (i am relieved to say); It idles at 50C with chrome (10 tabs) and skype open using about 2.7GB of RAM in idle.
At load (watching youtube in 1080p and doing other intensive tasks i couldn't do before (used task manager to check it's at full load)) the temperature was 80C MAX.
I can now play Minecraft and Cod5 and the new need for speed but I've lost interest in games as i haven't played (been able to play) them for such a long time.
I also made more holes with a knife where the fan has engraved cut outs. They might as well have written "please cut here if you want ventilation". Mickey Mouse laptop but i'm very pleased and hopefully won't get a machine until Battlefield 3 comes out (or maybe 1 year and play it on low graphics).
Thanks for the advice ^_^