Tried to change the thermal paste and replace the battery, but I messed it up. It now shows a blue screen. I was the first person to open the case, but I lost one screw from the top during the process. It currently has a new V2 battery fitted. There is no water damage. The screen and case are in fair condition, with some small scratches. I don't have the right tools to attempt any further repairs. I think I may have shorted one or more components when I tried to remove the old thermal paste around the CPU using a soft toothbrush. All resistors appear to be in place. It needs to be inspected with a thermal camera or microscope.
