Symptoms:
Since two weeks display used to suddenly disappear and then when it comes back the brightness used to be 100% scaled automatically.
Now the computer is booting, the fan's voice is there, Keyboards caps Lock is showing LED ON/OFF, but permanent blackout.
Sony Vaio Blackout Display Issues, screen/monitor tested today by replacing with 3 new display screens and seems to be not working that means my original may also be right, what else could be the culprit?
I took the machine to the local vendor he tried to troubleshoot the initially blamed the screen, but he tested with 53 screens none worked, which means the issue is somewhere from the motherboard.
Which steps should I take now? which hardware components should I suspect?