Dell laptop doesn't recognize the ac adaptor

"Basically when I plug it in I get a nice popup telling me that it couldn't detect that its a Dell power supply so it won't charge the battery and underclocks the system. It still works for other purposes (that is, giving power)
I thought it was the actual power supply cable so I bought a new one, that worked for a while, provided I inserted it at JUST THE RIGHT angle. But now that's not working anymore, so I assume its the part which connects to the computer.
The battery charging I can live without, the underclocking I can't. I'd like a way around this issue. Things I've tried:
Updating the BIOS
Replacing the power supply cable
Inserting it at different angles
Turning it off and on again
Swearing at it
Twisting it while inserting it
So, is there a workaround somehow? I'd like to avoid taking out my soldering kit and risking permanently damaging expensive equipment if that's allright. I'm hoping for a software solution.
Added: The exact model is a Del Inspirion N5010"
Answer:" I suppose that there would be a few models that DO have more than two wires going down the ac cable; however if you follow my trouble shooting guide your problem will be solved.
1: Check battery
2: Check AD adapter
3: Check DC power jack to motherboard connector/wire/ whatever it is
if it is not one of those three things then you have faulty circuitry on the motherboard that can be repaired by someone with experience - not by the folks at Best Buy - not likely at any local computer repair shop either... you need a tech that has advanced skills (and tools) <br />
if your problem is the Dell DA130PE1-00 ac adapter because Dell has a build in mechanism to make sure the adapter is Dell before allowing it to charge the battery. However, even if the adapter is Dell, if the identifier chip inside the adapter is broken, the laptop would refuse to recognize the Dell XPS 15 L502x adapter and stop charging. It seems that your laptop was starting to have the problem when it shows you the message that ac adapter cannot be recognized.
You can follow this Dell's troubleshooting guide to try to get the laptop to recognize the charger. It might not work for your laptop because it is a bit outdated.
http://ftp1.us.dell.com/diags/R66243.htm

If the troubleshooting does not work, most likely, you will have to buy a new adapter for Dell XPS 15 L502x since the laptop cannot identify the charger as Dell anymore. However, before you buy a new charger, borrow someone else's charger to make sure it will charge the laptop and that is the problem for sure. I wouldn't want you to waste money on a part that is not necessary."

Asus Laptop Battery Not Charging

Laptop Battery "plugged in, not charging" that shows you how to do a free & easy laptop battery calibration. Plugin not charging is simple to fix. This laptop battery not charging fix solution is simple to do in only a few steps. This solves the problem that most people come across with their laptop battery not charging while plugged in to AC power. Is this a laptop battery rebuilding project? Just a little bit.
Are you getting a message"laptop battery plugging in,not charging" from your laptop?
for a free fix,try this 12 sep asus laptop battery Calibration and see if it works for you

Step1.Shut down windows and power off your laptop
Step 2.disconnect the laptop ac adapter from your asus laptop
Step 3. Remove your laptop battery
Step 4.Connect your laptop ac plug to your laptop
Step 5.Turn your laptop on and boot to windows
Step 6.Un-install all Microsoft ACPI Compliant Control Method Battery Listings in Device Manager,More Than 1 is ok
Step 7.Shut down windows and power off your laptop
Step 8. disconnect the laptop ac adapter from your asus laptop
Step 9.Insert your laptop battery back into your laptop
Step 10.Connect your ac plug to your laptop
Stpe 11.Turn your laptop on and load windows.Micorsoft ACPI Compliant Control Method Battery Listing with auto install again
Step 12.Completly drain your asus n61j battery charge and recharge about 3 times
Allow the a32-n61 battery to cool down to room temperature beetween charges

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Lenovo Laptop AC Adapter Not Charging

"Question:I have a Lenovo G Series (i think g series) laptop and when i plug the charger in, it doesnt do anything. It doesnt show the little sign that says its charging, nothing!"
Answer:"1. Disconnect the laptop Ac power supply.
2. Shut down the computer.
3. Remove the battery
4. Connect the A/C power supply
5. Start the computer.
6. Under Battery... (here's the problem, -where is "battery?" I searched, and finally remembered it is under Control Panel, then System, then Device Driver, then Battery)
7. Click on Battery (at the top), and then right click on all entries that say Microsoft ACPI Compliant Control Method Battery, and select uninstall.
8. Shut the computer down.
9. Disconnect the lenovo laptop power supply.
10. Insert the battery.
11. Insert the A/C power supply.
12. Start the computer.
13. It should be fixed"
if the lenovo laptop ac adapter also not work, I would highly suggest you look into getting a new one as soon as possible. According to your question, the Lenovo 40Y7696 charger states that its charger but its not. This just means the charger light is working properly, its just not charging properly. Look into getting a new charger as soon as possible. Make sure you get one from a reliable source instead of a cheap knock off on like ebay or something. I would personally suggest you visit laptopadaptercharger.com.au. They are very reputable and have great service. They include 60 days money back guarantee, and 1-year warranty so if the Lenovo 40Y7659 adapter ever stops working, they would replace it at no additional cost, for life.