Try my program PCNP - https://pc-np.com/en
There are all reasons of this problem - computer works but no display or no image on the monitor. If you have black screen with another problem - watch these videos:
1. Computer beeps and no image on display - • PC beeps and No Display? Computer beep cod...
2. PC doesn`t turn on at all - • PC doesn`t turn on at all! Plan of actions...
#pcnp