i plugged in my other monitor just now & it didn't have the 'Control Lock' thingy. and...cold reboot? today, i found out that
when i reboot my comp, or switch it on, the monitor makes this sound... "click click click"...& the screen is black until it reaches the desktop.

..also when the box pops to 'Unlocked'... i can press the button to my menu[where you adjust yur screen, contrast, brightness, etc] but when it pops to 'Locked'.. i wont be able to access the menu. y'know what i mean? pressing the 'exit' button will make the box momentarily disappear from the screen, but when i realeasd the button, it's back again.