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Establish a theory of probable cause
Test the theory to determine the cause
Establish a plan of action to resolve the problem and implement the solution
Verify full system functionality and, if applicable, implement preventive measures
Document the findings, actions, and outcomes
Proprietary crash screens (blue screen of death [BSOD]/ pinwheel
Black screen
No power
Sluggish performance
Overheating
Intermittent shutdown
Burning smell
Application crashes
Grinding noise
Capacitor swelling
Inaccurate system date/time
Incorrect data source
Physical cabling issues
Burned-out bulb
Fuzzy image
Display burn-in
Dead pixels
Flashing screen
Incorrect color display
Audio issues
Dim image
Intermittent projector shutdown
Lines down the printed pages
Garbled print
Toner not fusing to paper
Paper jams
Faded print
Incorrect paper size
Paper not feeding
Multipage misfeed
Multiple prints pending in queue
Speckling on printed pages
Double/echo images on the print
Incorrect color settings
Finishing issues
Incorrect page orientation
Intermittent wireless connectivity
Slow network speeds
Limited connectivity
Jitter
Poor Voice over Internet Protocol (VoIP) quality
Port flapping
High latency
External interference
Light-emitting diode (LED) status indicators
Grinding noises
Clicking sounds
Bootable device not found
Data loss/corruption
RAID failure
Self-monitoring, Analysis, and Reporting Technology
Extended read/write times
Input/output operations per second (IOPS)
Missing drives in OS
Poor battery health
Swollen battery
Broken screen
Improper charging
Poor/no connectivity
Liquid damage
Digitizer issues
Physically damaged ports
Malware
Cursor drift/touch calibration