Dell inspiron 15 (m5030) won't recognize ac adapter

April 9, 2012 at 11:47:54
Specs: Windows 7
My Dell Inspiron 15 stopped recognizing it's AC Adapter about a week ago, giving me an error message every time i plugged the AC Adapter in or started the computer up. The message is as follows:

""Your system will operate slower and the battery will not charge. Please connect a Dell 65W AC adapter or higher for best system operation."

So i replace the AC Adapter and everything is fine for about 2 days--the laptop charges to 100 percent and i don't get that error message any more. But just last night it popped up again when the battery was at 100 percent. I took the AC Adapter out and the laptop stayed on. I restarted it with the battery out and the AC Adapter in and it stayed on. I tried to update the BIOS and it was already updated. Today I plugged it in to an outlet at my campus center and it worked fine--so now with the new AC Adapter it's happening intermittently. The Dell Battery Meter says the battery is performing normally and, of course, my warranty is up so Dell can't do anything about it.

I'm thinking maybe something inside the laptop had been knocked loose since now it works sporadically.

Any ideas as to how i can fix this?

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April 9, 2012 at 11:52:32
Yes, the center pin on the dell adapters is what tell the computer that the adapter is the correct one that works with your computer. However the DC Jack for those do go bad quite often giving this problem.

After the DC Jack is replaced the problem will be fixed.

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April 9, 2012 at 15:08:56
If this only happens sometimes I suggest you take notice of where you are plugging in the AC adapter to the mains. I is possible you are accessing an outlet that has reverse polarity.

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