Looks like this issue is prevalent with the N5110.
Here's a post en.community.dell.com/.../19422378.aspx
"I've had problems with this for almost a year. Had the tech support team try to reset the computer to factory specs several times, tech came out and replaced the 1030 adapter, which didn't help. finally, the tech came out again and replaced the 1030 with a 6230, and it works mint. If you're still under warranty, get the tech out and have them install the 6230."
If I return my laptop to Dell, can they not only reset my computer back to factory settings, but also replace the adaptor to the 6230??