HP M2520TU, M2599XX, M2526TU, M2525TU, M2528TU, M2529TU, M2527TU, M2523TU Flowchart 2.6-No Video, Part

Troubleshooting

Flowchart 2.6—No Video, Part 1

No video.

Docking Device

	Stand-alone		Go to
			“Flowchart
	or docking
			2.7—No Video,
	device?
			Part 2.”
	Stand-alone
	Internal or		Adjust
	external
			brightness.
	display*?
External		Internal
			A
	Adjust
	brightness.

*NOTE: To change from internal to external display, use the hotkey.

Y

Video OK? Done

N

Press lid

switch to ensure

operation.

Y Y

Video OK?

N

Check for bent pins on cable.

Done Video OK? Done

N

Replace the following one at a time. Test after each replacement.

1.Cable between computer and computer display (if applicable)

2.Display

3.System board

N

Video OK?

Y

Try

another display.

N

Internal and

external

video OK?

Y

Replace

system

board.

Done

Done

2–14 Maintenance and Service Guide