To toggle the OSD lock off, press the Vol + and Vol - buttons on the Viewsonic N2011 simultaneously. This is shown in the manual on page 8, see https://www.manualslib.com/manual/306712/Viewsonic-N2011.html?page=8#manual . I believe these buttons are on the back of the unit on the right hand side as you face the TV.
I hope this helps.
Cindy Wells
SOURCE: OSD Locked
You can try this lcd monitor factory service mode login method here http://www.fastrepairguide.com/monitor-and-lcd-monitor-problem-solutions/login-factory-service-mode-lg-lcd-mo.html http://www.fastrepairguide.com/monitor-and-lcd-monitor-problem-solutions/how-to-login-to-lcd-monitor-factory-service.html Try and see!
SOURCE: osd locked
I had precisely the same problem... I depressed the Menu Button for about twelve seconds or more and the menu actually finally popped up; and does so now every time I depress Menu! Hope this works for you.
Big Jim
SOURCE: W1941S monitor flashing OSD Locked/ OSD unlocked alternatively
Sounds like virus.Tryto start in safemode then run virus protection and afterward install a firewall.
Testimonial: "Thanks wce3. I guess it was a virus. i followed the steps and then tightened the noose for the existing firewall i had and the prob is not happening. "
SOURCE: I have a Viewsonic flat-screen tv, it displays "menu locked" ??
Try holding the VOL + and VOL - buttons on the TV (not on the remote) down together. You should see a "unlocking buttons" message on screen. This might work. However, I tried it repeatedly, as told to by the Viewsonic "service" rep, and it didn't work for me. Viewsonic is ****, and so is its "service"!
* When the MENU button is pressed, the On Screen Display (OSD) appears on the Image Settings page.
* Press the [Channel Down] button to change to the Parental Controls page.
* Press the OK button and the first of the 4 Password boxes will be highlighted.
* Press the [CHANNEL UP-> CHANNEL DOWN-> VOLUME UP-> VOLUME DOWN] buttons in this exact sequence. Press the OK button
* The password has now been reset to "0000" and the following message will appear.
You can reset it after. The above said buttons will be on the center of the remote control within a circle. OK.
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