Issue 1:  Dell Support Assist will not load - response says it may be an internet issue, yet here I am using the very same computer via WiFi and is working fine. May be related to issue 2.

Issue 2: Preboot diagnostics reports Error 2000-0142, validation 73968, Hard drive 0 SN 74PRTFPJT - short self test unsuccessful. - planning to replace hard drive.

Observed behavior: Windows boots, desktop oscillates between desktop and blue screen, apps are difficult to load (very, very slow). OS is W8.1 pro.

Currently using Firefox to access this site and it has no issues.  Will be moving to W10. This Laptop is a Dell refurb and has been a great buy.

Looking for a process forward - attack which issue first?