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If you turn on your laptop and there's no image on the screen but the cooling fan works, it could be a memory failure. Maybe
one of the memory modules failed.
What should you do?
1. Try resetting the memory module to make sure they make contact with the slot.
2. You can also try removing the memory modules one by one and test the laptop with only one module installed.
3. If resetting the modules doesn't work, try removing the hard drive, DVD drive, modem, wireless card, keyboard, etc.
4. If you did what is stated above and yet laptop still doesn't work, then you have a problematic motherboard or processor.
You may have to change the motherboard or simply take the laptop to a repairer.
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