Hi guys! i have a strange problem with my inspiron 14 N4050. When I plugged in the AC charger, the touchpad does not work properly. Sometimes it moves and sometimes not eventhough I have moved and touched the touchpad. When I disconnect the AC charger and reboot the system, the touchpad works perfectly fine. Can anyone give me advise on this? thanks in advance
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The issue is the grounding for the charger. I tested this myself with an asus Q200e. I lost the OEM charger and had to purchase another one. Once I began using the aftermarket charger, the erratic behavior began. The only saving grace is that the laptop is a metal body. So If I place my palms on the body and use the touchscreen or pad, the erratic behavior stopped. As soon as I removed my hands, it began again. You'll need to purchase a charger that is internally grounded or has a ground loop isolator built in. Otherwise, you'll have to find a way to ground the laptop while using the charger.
Same problem with my old Inspiron 6400. Brought home a newer Inspiron N4010 from the office and just by chance plugged it into the old charger that was already on the desk. Same problem. Tried the N4010 charger on both Laptops the touch pad works on both. So I assume it is the charger that needs a replacement. On all laptops we use Linux.
Hope this helps!!
Same problem on Inspiron Q15R. I have a second universal power supply...both cause the erratic mouse.
A simple google search will show that this is a problem that is a couple of years old.
Is there any 'real' answer to this problem?
Same issue here! New laptop and new AC adapter. What's weird with mine is that my touchpad is only erratic when my AC adapter is plugged in on one side of my house. If I take the laptop and the same adapter and plug it into an outlet on the other side of my house, then it works fine. Until I did a Google search and seen that there a lot of people experiencing this problem, I thought maybe my house power might be hosed up.
Like everyone else though, when it's not working, it works fine all the time on the battery.
Let me know if Dell ever decides to find the real root cause to the problem and fix it!
hiii my Dell Inspiron n4050 touchpad stops working when I plugs in the ac adopter
what should I do
and I had tried the process as described by Dell-Royan S
I have found this to be common with several brands of laptop, especially with the cheap Chinese adapters sold on Ebay. You can either use a USB mouse or try adapters till you find one that works. If the adapter came with the laptop, demand a new adapter from Dell. If buying another, try to get a genuine adapter made for that particular model. You may fix it by earthing some external component of the motherboard. For example, touching the serial port with one hand may earth it sufficiently for the touchpad to work but this is impractical. The problem lies with the design of the adapter. I recently had an Inspiron which had this problem with the PA-10 adapters sold on Ebay; correct voltage and current and even listed as suitable for this model. Only the correct model specified by Dell for this model laptop worked.