I am trying to run the Dell diagnostics on my XPS 420 because I suspect HD problems (my first HD also failed and was replaced).

The problem is, the diagnostics won't run. The diagnostics that came with the computer give me a runtime error R6025, pure virtual function call, while initializing SCSI.MDM. I downloaded an iso of a newer version of the diagnostics, and I get a different error: exception occured in module delldiag.exe. Warning: no line mapping found! this also happens when scsi.mdm is initializing.

Any solutions out there?