Acer Aspire 4720Z won't power on

My laptop was on and operating normally, then suddenly just turned off. It didn't go through the normal shut down process, seemed like the battery died out but the battery indicator showed a full battery. Now it won't charge or power up. When I push the power butter, the battery LED flashes 8 times and nothing else happens. AC adaptor shows that it is receiving power from the outlet but the computer is not taking the charge and the LED isn't lighting up when the power cord is attached. (The cord's output is 19V 3.42A). I have two of these cords so I tried it with both of them. I removed the cord and thebattery and held down the power button for 25 seconds, then plugged in the cord without the battery and got absolutely no response, then replaced the battery without the cord and got the 8 flashes again. Then pluuged the cord in and still just get the 8 flashes. What could be the issue? Thank you in advance!!

Have you had any other intermittent problems with the laptop failing to charge the battery occassionally? Sounds like a possilbe power jack problem, but those usually get worse over time, not go bad all the sudden unless someone tripped over the cord or something.

No I haven't had any other problems with the laptop before. It's never just shut down or flickered or anything. it was just on, then off. Now it won't do anything, except the LED flashing 8 times when i hit the power button.

Hi,ephillips, I see that you have posted the same question at several other help forums. Many of us work at different forums, and therefore if you multi post you are just tying up volunteers time who will all be researching your issues. The best advice to follow is to post your question at a forum of your choice and then stick with them until you either have an answer or establish that they can't help. With your Acer the problem is almost certainly in one of 3 areas 1 Your power supply may be faulty..check its output with a meter, if OK then move to 2 2 The power jack soldered to the motherboard maybe has malfunctioned (there can be excessive stress on this part and the fixings are mechanically weak) a good home test for this is to gently move the power plug from side to side and up and down to see if a power connection can be established. That test is not definitive, but if the power jack on the motherboard is defective then the part costs about £3 GBP say $4.40 (USD), but the machine needs to be stripped down to gain access to the motherboard so the cost of labour is unlikely to be less than £60 (GBP) say $90 (USD)…not all repair shops will undertake this work, as good electronic soldering skills are needed and the chances of brittle plastic items breaking during the srtipdown/reassembly cannot be ruled out, even in the most professional and well equipped workshops. 3 The final possibility is that the motherboard has maybe failed in other areas. Step one will cost next to nothing in labour charge, and with step 2 the labour charge for the stripdown reassembly will be incurred whether the power jack is faulty or not…..It is suggested therefore that you might like to consider the order of approach as: step 1, then step 3, asking the repair shop to test the mobo…putting on a mobo tester and tracking the error code will usually indicate if the Mobo is bad, and if you ask for a fixed price for this diagnostic it will limit your cost exposure.If the mobo needs replacing and the computer is out of guarantee/warranty then its worth getting prices for a replacement laptop of suitable sspecification as the cost of mobo replacement can be very high. Good luck and I hope you get it fixed OK Regards paws