Compuitincolo,
No, it is not related, the error you see is about the XMS driver, himem.sys. It cant load on this machine so the diags.pde can't be loaded as it is dependant on Himem. The diags.pde is to test Intel network cards only.
You can try placing the system in SATA mode (not AHCI) and retest. You will have to put it back in AHCI mode or the system will not boot.
If the errors persist then it is most likely indicating the impending doom of the hard drive, get the data you can off of it and replace it as soon as possible.
-Fred