no photos of said window presented? i cant see them?
must be OSD? the monitor brain on screen display (menu)?
even with the DVI cable pulled?
only a monitor stated, w1907, no PC
some monitors have button lock
read the manual ?oops HP deleted it...
it tells you to push the menu key on the monitor for 10 seconds
and it unlocks. (4 buttons right side left button is MENU)
that power deal sounds super bad, like the power supply is bad.
if the monitor fails by its self not plugged it to a PC
then the monitors is bad.
try a reset on it? ( power off for 1hr, or off then plug in with power button held? or power on with menu held (wild guesses but common practice)
ok found your manual page 4-8 shows menu page advanced
list line in list factory reset.
but if the keys are dead, and power lamp failing
the power supply is no good or worse. worse is always possible.
ever see the support page, read the guides
its over 10 years old now. 2007?
walmart has larger one for $50
cheaper that parts or repair this.... vastly