Originally Posted by infodump;14571298
With my older Dell laptops using any other power adapter would cause the system to be EXTREMELY slow and it would say "Incorrect power adapter" but it would power it just fine.
This is correct in my experience. Between work and home I have 4 Dell laptops. The 3 newest have 9-cell batteries and came with a 90 Watt adapter. The oldest one has a 65 Watt adapter. I don't like always having to move them around so I keep the 65 Watt plugged in all the time in my bedroom. When I plug one of the newer laptops into it, I get a message stating that it is not the correct one...yadda, yadda...and that performance may be affected. It charges just fine, and to be honest, I really don't notice any side-effects on performance. I've had this setup for at least 2-3 years.
Just my 2c worth...hope it helps,
EDIT: Just read your last post. Is the main battery in the laptop completely dead? If so, I would charge it for awhile before turning on. It may not have the power to run it alone.