i have an emachine at home which is my nephews. he always relies on me when it comes to software and hardware problems. up to now i was able to trouble shoot his pc but this time im a bit lost.i was hoping someone in here would help . problem: it wouldnt power up at all no lights no nothin. i replace the power supply and now it powers up lights on but no video. fan on video card not turning so i said ok ill try my graphics card on his. my cards fan turns ok on his pc but still no video. not even on the onboard video hook up. any suggestions?