First thing I would do is remove the HDD's, and all but 1 stick of RAM. See if it boots to the BIOS with just that hardware installed.
I might also check the GPU to make sure it is properly seated in the MXM slot. This could be an issue.
If it's neithe...
I might also check the GPU to make sure it is properly seated in the MXM slot. This could be an issue.
If it's neithe...