Windows finds hardware memory faults; Dell Quick Test says memory OK (Inspiron 3847)

After some erratic weird behavior from my Inspiron 3847 over the last few weeks (mainly responding wrongly or not at all to mouse clicks) and finally a couple of blue screens of death that reported hardware problems, I ran the Windows Memory Diagnostics .  The test reported several "bad pages" (a slightly different number each of the three times I ran it).  I'll paste in the report from  one of these tests below.

The Windows test recommended I "contact the manufacturer" about this.  So I went to Dell.com, and:

1.  I ran the "Quick Test".  It reported everything OK including the System Memory "Address Test" and "Advanced Pattern Test".

2. I tried to run the diagnostics offered at www.dell.com/.../diagnose using Internet Explorer v 11.0.9600.  I've been looking at "Loading. Please wait" for over an hour, so I assume this is not working.

Please advise on where to go from here to get my Inspiron working again.

~ Thanks in advance

~ Ken

Here's the Windows memory test report:

- System

 - Provider

   [ Name] Microsoft-Windows-MemoryDiagnostics-Results

   [ Guid] {5F92BC59-248F-4111-86A9-E393E12C6139}

   EventID 1102

   Version 0

   Level 2

   Task 0

   Opcode 0

   Keywords 0x8000000000000000

- TimeCreated

   [ SystemTime] 2015-12-02T21:20:47.808294000Z

   EventRecordID 48125

   Correlation

- Execution

   [ ProcessID] 4964

   [ ThreadID] 4968

   Channel System

   Computer KenDell

- Security

 

   [ UserID] S-1-5-18

 

- UserData

 

- Results

   LaunchType Unknown

   CompletionType Fail

   MemorySize 8108

   TestType 10

   TestDuration 312

   TestCount 12

   NumPagesTested 2074763

   NumPagesUnTested 1125

   NumBadPages 7

   T1NumBadPages 4

   T2NumBadPages 5

   T3NumBadPages 0

   T4NumBadPages 0

   T5NumBadPages 0

   T6NumBadPages 0

   T7NumBadPages 0

   T8NumBadPages 0

   T9NumBadPages 0

   T10NumBadPages 0

   T11NumBadPages 0

   T12NumBadPages 0

   T13NumBadPages 0

   T14NumBadPages 0

   T15NumBadPages 0

   T16NumBadPages 0