6. Remove the cooling box plus cpu fan all at once. You do not need a
screw driver everything should just come off in one piece by moving
handles.

Watch out for sticky cpu coolers. sometimes the paste and cpu
keep toghter when you want to remove it. if that happens you pull the whole
cpu from it's socket and bend some pins.

if the paste is warm it get better loose from the cpu.

Good tip spacebug !

In other words, be carefull not to damage the cpu.

Bye,
Skybuck.