Question about Dell E771p 17" CRT Monitor
Hi there, it is usually holding the menu button itself for a couple seconds .It should even shows unlocking progress bar on screen. Hope this helps .Cheers
Posted on Dec 05, 2013
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Posted on Jan 02, 2017
Tips for a great answer:
Aug 27, 2014 | Dell P2210 Monitor
Feb 01, 2012 | RCA Televison & Video
1 Press MENU to display the MENU screen, and then
press VOL[--/+] to select "System Options".
2 Press CH [UP/DOWN] to select "Operation Lock Out", and
then press INPUT.
3 Press CH UP/DOWN] to select "Off", and then press INPUT
4 Press MENU to exit.
• To unlock the buttons on the TV, press MENU on the
remote control, and then select "Off" in "Operation Lock
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