what parts of my computer hp pavillion dv2500 has been damaged caused by incompatible charger. laptop has power but no display.
Can only guess graphics card was affected. You will have to have the MOBO tested with diagnostics by a professional to know for sure.
Too bad you didn't read this first regarding power supply / cord..http://h10032.www1.hp.com/ctg/Manual/c01295820.pdf