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Kindly connect same input to a different device and if that is ok, check whether the input for the TV is selected properly for the input connected. If it does not work, this might require attention by a qualified service technician.
this
is a normal condition for that kind of monitor, because it was design only with
Samsung syncmaster 731n in
which the old model. The reason why it always popping up is because it always
adjust the setting of the images. The only way to solve this problem is if this
menu appears again you only press the reset button there at the left side of
the power button.
If this is an LCD or Plasma it may be some bad capacitors in the power supply. This is a common failure point on these newer sets. You can call in a repair shop or do the repair your self. Goto sites such as www.TvRepairKits.com and get their Capacitor Repair kit. It has a variety of capacitors that are most frequently found in these sets. It also includes instruction on how to locate and correcly replace any faulty capacitors in your TV.
If your screen has a VGA, DVI, or HDMI port, most of the new graphics cards will be compatible with your screen. Most graphics cards come standard with DVI ports and include a vga adapter for the screen cable. Some of the new graphics cards come with HDMI and DVI ports or a HDMI converter if you want to use HDMI.
I would recommend a Nvidia graphics card. Depending on what your primary use is going to be they have an extensive range to cater for your requirements and price range.
Samsung implements protection into their monitors, which allows to block all settings except brightness and contrast. This "Locked" mode turns on by pressing and holding 'Menu' button for 5 seconds, and turns off by pressing and holding 'Enter' button for 5 sec.
it is a black screen and it is saying lock
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