Be very careful when removing RAM, Motherboard or CPU.... ALWAYS.... wear an earthing strap that has been tested as static will destroy these components! These wrist straps are not expensive and work by having a capacitor in contact with your skin that takes a few seconds to equalise the charge between you and the machine, so a bit of wire is of no use, as its the gradual discharge that is the key factor. Also ensure that any new components are in their correct metallised packaging and are kept in it until fitting I.e. DON'T take em out for a quick gander/drool before fitting and then handle them by the edges only. This was dinned into us on the "City and Guilds" Computer Technicians course I passed a few years ago,
I only got onto this course by "accident" in that I wanted to learn how to operate a computer but instead learnt how to be a computer mechanic, good fun though.