I have a dell Latitude D530 and when i plug in the power for it in the bios it will tell me it's not a dell power adapter. It is a dell adapter. I have a 90w and a 150w dell laptop power adapter. Could something on the motherboard may not be working. I took the battery off the motherboard for a hour to erase the bios but it did the same thing when i plug the adapter in. When i plug the adapter in my other dell they work just find. Hope someone has a idea what may be happening. Thank you for the help.
It's either a bad DC jack or a bad mainboard. The jack is soldered to the board on this model - and given that a repair will be well over $100, while a replacement mainboard runs $70-80, it'll be cheaper to replace the mainboard. parts-people.com has boards listed for $70 and $80 for this model.
Thank you for your help. I took the laptop apart and found out the guy i bought it from had it apart too. The dc jack had wires he solder from the dc jack to the motherboard so it wound turn on. I price new motherboards on ebay and found one for 14.00 brand new. thank you again for the help.