If the laptop keeps working, and you can use it on an external screen, then it is likely an hardware fault.
First perform a complete system recovery, like probably already instructed by the Dell support helpdesk. This will practically exclude the possibility of a driver or system problem.
If the problem is hardware , then you may have a faulty inverter board , a bad LCD display/LCD ribbon connection, or a faulty video adapter (integrated with motherboard).
If the problem is the inverter, then the screen will go dark, and the laptop will keep working on external display. This is probably your case.
If the problem is LCD display or ribbon cable, then the display will be blank with light on , and the laptop will keep working on external monitor.
Fault concerning video adapter usually cause the the system not to work at all, and it is uncommon under conditions described.
Comments:
Sep 05, 2009
- Hi,
I noticed that the free support given received a bad rating.
Please ask me if you have more question.
If you do not have anymore question, please change your rating according to the support given.
Thanks.