Screen is valuable, bluetooth and wifi card, keyboard and the case. if the cpu and gpu are gone? unless you have a reballing station to reball it? that board is worth nothing unless you want to salvage the componentsIt is a crime that the improper use of thermal paste/pads and ignorance of its use has killed way too many computers before their time. Very sad.
Is it even worth restoring that model MacBook???
My cousin had a similar 2008 13" MacBook model that just up and died one afternoon but I didn't do any further investigation as to the cause other than the normal Diagnostics excetera... I didn't think it was really worth it... BTW: is it worth anything for parts???
I ended up selling her my 2007 15 inch MacBook Pro that was fairly loaded and with a solid state drive installed which is still working well for her use.