It is possible the laptop appears to be dead because the AC adapter is bad (and the battery is discharged).
In this situation test the laptop with an external monitor.I usually use Hitachis drive fitness test.Also this problem might appear because of a faulty memory module, try some tips from the situation.Most likely there is nothing wrong with the adapter but just in case test it with a voltmeter to make sure the output voltage is correct.Most likely you are getting a beep error because of a faulty memory.When you plug the AC adapter the power LED and the battery charge LED light.The internal screen remains completely black and blank.I found this trick mentioned by Walliot in this post.Most likely its a heat related issue.It starts with with video.HOW this FIX works: Heres my understanding of how this fix works.When you press on the power button, the laptop makes a series or short and long beeps and will not start.
Unplug the AC adapter, remove rate my rack crack the battery and wait for 1-2 minutes.Try installing the memory module into the other slot (if its available).Most likely you hear this noise because of a faulty hard drive.The output amperage has to be the same as on the original adapter or higher, but not lower.There is no video on the screen.My fix was successful again!The heatsink gets so hot that it melt solder between the chip duramax diesel service manual and motherboard and the video chip gets resoldered to the motherboard.Listen for the cooling fan, make sure it works.I didnt have paper towels at work but I had plenty of bubble wrap.Related post: How to troubleshoot dead laptops.Im not sure if I can cover all situation at once, so I will update this post cheat list pokemon ruby as more examples come into my mind.If the power LED lights up it indicates that the laptop is getting power from the AC adapter.The output voltage must be exactly the same as on the original adapter.Sometimes this trick helps.Overtime the graphics chip separates from the motherboard and the video fails.HOW TO FIX:.
I usually use Memtest86.
There is no video on LCD or external monitor.
If the external screen works fine but there is no video on the laptop LCD, most likely there is a problem inside the laptop display assembly.
In this situation test the memory module as I described in the situation2.