Ac Adaptor Unknown Dell

How to resolve battery and ac adapter issues on your dell portable computer.

Ac adaptor unknown dell. There s a quite popular problem with dell notebooks. This results in cpu underclocking a lot and battery not charging at all although notebook is usable. Plugged in not charging. If it doesn t make contact or there s a break in that circuit somewhere but the main power circuit is ok the system will run but the battery won t charge.

Ac adapter unknown plugged in not charging so i ve had a dead battery on my inspiron n5010 that would not hold a charge. If the field just says unknown device installed all the time try the adapter with a different dell laptop if it works in that case it s most likely the host controller chip on the mother boards or the power adapter adapter jack that needs re soldering. I have 2 laptops xps 12 and inspiron 13 7000 with the same problem unknown adapter plugged in but not charging. The ac adapter is not recognized as dell s and it is said to be unknown in bios and after starting the machine.

In case the adapter doesn t work for either laptop it s more likely the ds2501 uniqueware add only memory is dead. Dell adapter not detected. Ac adapter cable and power cables may get frayed or cut and wires may become exposed at either end of the cables. To check the ac adapter cables.

But in my case the system normaly works i have this fault about 1 or 2 times a week and when i reconnect the adapter a couple of times to the notebook while having the battery page of the bios opened it runs fine again. Power for the memory device comes from the laptop which is the same ac adapter identification wire indicated as a parasite power circuit. Ac power adapter. My laptop battery has poor performance.

Ac power adapter is not recognized there is a third wire in the dell jack that completes a logic circuit between the adapter and mainboard. Plugged in not charging. Somtimes my dell inspiron 5150 says unknown ac adapter on startup. Short introduction on how a dell power adapter communicates with the laptop the video might give you a clue how to fix the problem that causes the infamous message ac adapter unknown.

So the ds2501 in the dell ac power adapter contains the identification info of the power adapter. I ve read this is mostly an issue of the mainboard. The dell laptop reads the identification info during startup of when it s connected while started. This problem might be due to problem with ac adapter cable port or mobo.

Fix to unknown ac adapter. Show all hide all. How to resolve battery and ac adapter issues on your dell portable computer. I also noticed that when i plug in the dell 65w ac adapter that came with my computer without the battery as a temporary power source and the light on the ac adapter shut off.

This may be due to the way the cable is wrapped around the ac adapter or if the cable is subject to undue stress. Laptop battery frequently asked questions.