Question Author
Hi everyone , thanks for all your help.
The front USB can power a mini vacuum.
I've tried removing all the USB devices but no luck I'm afraid. Today I'll open it up and try removing the RAM. By the way I upgraded the RAM last year and it's been working OK ever since.
I'll let you know what happens.
By the way could an amateur remove the hard drive and put it in another computer ? Is it difficult. I've only upgraded the RAM, fitted a DVD drive and replaced the battery to various computers.
Bye for now
Isnibs (steve)