WGU.D316.L3 Troubleshooting Methodology complete questions with expert solutions + rationales

Best practice method - Step 1

Identify Problem

Best practice method - Step 2

Establish and Test Theory

Best practice method - Step 3

New Theory or Escalate

Best practice method - Step 4

Establish a plan of action

Best practice method - Step 5

Verify full-system functionality and, if applicable, implement preventive measures

Best practice method - Step 6

Document the findings, actions, and outcomes.

Linux Screen of Death

Kernel Panic

MacOS Screen of Death

Pinwheel of Deth

Boot Device not found or OS not found or Invalid Drive spec is typically

Damage to MBR or GPT

What if MBR/GPT issue is caused by malware?

Use boot disk option in AV or OS setup to repair boot sector

PC fails to boot after POST w long continuous beep

PC disk thrash emits one short beep and loads OS

Passed POST ready to boot, low mem

PC boots to OS emits one short beep but 2nd drive is silent with solid red LED - drive missing file system

Passed POST ready to boot, 2nd drive failure

No beep

PSU, MOBO issue or faulty onboard speaker

What would repeating short beeps indicate?

1 short beep

Passed POST ready to boot

2 short beep

POST error, error code shown on screen.

Continuous beep

Problem with memory controller or modules

Repeating short beeps

PSU fault or MOBO problem

1 long, 1 short beep

MOBO problem

1 long, 2 or 3 short beeps

Video adapter error.

3 long beeps

Keyboard issue (check that a key is not depressed).

Grinding or clicking noise

Likely Disk HW fail

No power, or disk improperly installed, or disk controller fault

Disk No LED

Disk thrashing or continuous paging

Constant LED

Disk Boot partition/sector or other file corruption

Boot device not found

Disk not formatted or HW fault (cable connector)

Missing drives in OS file system

HDD bad sectors resulting in repeated "source file not found" or similar error

Read/Write fail

How to deal with bad sector

Run disk test utility

Screen of teath

Any serious error resulting in system STOP error

When facing data/disk critical errors what is the first thing to do?

Attempt data backup and replace disk ASAP to reduce risk