hp compaq pentium HT 2.8 GHz PC for repairs ?

small form factor pc HP compaq pentium 4 HT 2.8ghz 2.8 ghz PSU CD ROM 8 USB CASE HDD & RAM are removed *issue the problem with this pc seems to be the onboard graphics. once you turn on the pc cpu fan powers and a black screen of display will come nothing as error message. so i am assuming it is the onbaord graphics feature is the fault. i could not test anymore ram is tested on a differnt PC and in working in good order. please note this item is for repairs or spare parts only also there is a COA sticker for windows xp professional. should be a easy fix if get a compatible graphics card. can be picked up from the wyken area price £ 15 will welcome offers thanks for looking if you have any questions dont hesitate to contact