Read this guide for bare bone system troubleshooting. If the laptop still doesn’t turn on, most likely you have failed motherboard or processor. – If reseating/replacing memory doesn’t 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. You can try removing memory modules one by one and test the laptop with only one module installed. In this case you can try reseating memory modules to make sure they are making good contact with the slot. It’s possible one of the memory modules failed. The screen is completely black and blank. The laptop turns on, power LED lights up, cooling fan works but nothing appears on the screen. Here are some tips for testing AC adapter and DC jack.Īlso, make sure to read step-by-step instructions for troubleshooting dead laptops.
Otherwise get ready to buy a new computer. The motherboard has to be replaced, if it’s not too expensive. In this case the DC jack has to be replaced. – DC jack failed and the motherboard doesn’t receive any power from the adapter. In this case test the AC adapter with a voltmeter.
– The AC adapter failed and the battery has no charge left.
The laptop appears to be completely dead, makes no sounds, no indications of life. When you push on the power button, nothing happens. When you plug the AC adapter into the laptop, there are no lights turning on at all.
