HI,
How long have you owned this laptop and where was it purchased from?
I would take it back if that is possible.
It appears you have a faulty LCD inverter (according to you test results). Is your LCD very dim?
It also appears you have a damaged or corrupt DRMK (Dell Real Mode Kernel), Dells MS-DOS version to boot into the Restore or Utility partitions
This link will explain it better:
http://www.goodells.net/dellutility/index.htm
Here is how you should run the Diagnostic Utility:
http://support.dell.com/support/topi...doclang=en&cs=
Bill