System Scan failure

This is not a simple answer because you provided little to no information.

The "test" has to do with DOS VESA modes that are not in the Video Bios for UEFI cards.

Since this test also involves Windows version and Java and Browser versions there is quite a bit of information that was not provided.

  Dell PC Checkup Error     WVC07-LAI

 "2D/3D Video Primary Surface Test" fails

 "The scan failed with the following error:

ErrorInputDiffersFromOutput - Error at pixes 1399 -0 Input color 00000F0F not equal to output color 00000EEF"

If you mean ePSA (outside Windows), that is bad.
 
If you mean SupportAssist in Windows ... that is a false-positive ... a long-time glitch in Dell's software. You can ignore it.
 
If you want to stress test and benchmark your system, I like OCCT, Heaven, and any free FutureMark. 

Thanks for the reply. More digging seems to support the false positive, with reports going back for 10 years. Not going to worry about it.