1. Depende sa Model
2. Bakit mo kelangan mag re-paste?
90% of the time ang main issue lang madalas ay madumi yung fan and heatsinks at kelangan lang linisin. Kumbaga yung ma-gain mo na couple of degrees (which is questionable pa) vs yung stress and uncertainty kung magagawa ng maayo is not...
i see. possible na yung ribbon cable from mobo to lcd yung may issue. Baka nabunot or worst napunit/putol na. Medyo lakasan lang ng loob kung interested ka i-disassemble. Ano specific model ng laptop mo pala? Hanap ka ng service manual or youtube.
TS.. may dedicated video card ba yung PC? Chaka may video out (hdmi/vga/display port etc.) yung motherboard? try mo ikabit yung cable either ports baka yun lang issue.