The laptop turns on, power LED lights up, cooling fan works but nothing appears on the screen. The screen is completely black and blank. There is no image on the screen at all.
- This can be memory failure. It's possible that one of the memory modules failed. In this case you can try reseating memory modules to make sure they are doing good contact with the slot. You can try removing memory modules one by one and test the laptop with only one module installed. You can try replacing memory modules.
- If reseating / replacing memory does not help, try removing the hard drive, DVD drive, modem, wireless card, keyboard, etc ... In other words, disassemble the laptop to bare minimum and test again. If the laptop still does not turn on, most likely you have failed motherboard or processor.
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