HiCustomer Thank you for asking your question on JustAnswer.
Please provide the model number of the monitor.
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
model 900w HERE IS SERIAL TO MSX6A 50N 04791
IT IS A FDP1975W 19-INCH WIDESCREEN
Other expert is offline and this is in red queue so picking it up.
Gateway does not want to release info on how to remove the lock without you paying cash.
You have 2 soloutions.
1. Visit Portrait Displays website and complete an online form with your problem. (This form prompts as to whether you have already contacted Gateway - so maybe they are monitoring the adequacy of Gateway support. The support from Portrait has been brilliant. Unplug the cable from your monitor and then hold the power button while you plug the cable back in. When the monitor is fully restored, release the power button and an anti-theft box will appear, prompting you to press the menu button at the side of your monitor. Press the menu button and you will be given a 3-digit code. Portrait need this code to give you an unlock code. Once you have the unlock code you can remove the anti-theft option.
2. Can contact gateway and pay them to remove(this option includeds shipping and waiting for them to do exactly what you could do yourself in step 1),however you pay them for it.
website to get your pin number.
Hope this helps.