I have a refurbished Dell Latitude D510 lap top. I can not get it to power up. I removed the battery and tried to power it up using the charger and that didn't work. I have a solid green light on the brick and there anren;t any frayed cords so I'm assuming that it's not the charger. If it powered up w/o the battery in then I would simply buy a new battery, but it didn;t power up with the battery removed so I'm wondering what else it could be?