PC not recognizing AC adapter although it is working well.

Every time I turn on my Dell Inspiron N5010 laptop, I get the following message:

"The AC adapter wattage and type cannot be determined. The battery may not charge. The system will adjust the performance to match the power available. Please connect a Dell 65W AC adapter or greater for the best system performance."

I don't know why I am getting this message since:

- I am using the 65W Dell AC adapter that came with the laptop
- The adapter is charging the battery properly
- The green light on the adapter stays on all the time when in use
- The port connection is fine

So, other than this annoying error message, everything seems to be working fine.

Should I just ignore it ?  If not, what else do you recommend I do ?