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You might have accidentally hit the external monitor key. Locate the Fn key, should be bottom left of the keyboard. Next look along the top row of keys and find the one for external monitor, it should have a rectangular screen looking icon on it. While holding down the Fn key, press that key and see if it comes back for you. If not then it's time to troubleshoot the display or GPU.
some display settings are not compatible with some monitors/lcd displays...
check before u make any changes to the display properties....
some changes done forcebly will permanently damage ur monitor beyond repair....
try to install the VGA driver software of the monitor/notebooks may not require andy drivers as OS would have installed it by default...
also dont make any changes to the refresh rates in the display properties as that also may damage ur monitor...
possible use the chekbox that says "Dont display frequency rates that are not compatible with the system"
well im not a great tech but i can give you one solution, you can try to connect it to ANY monitor from the VGA port of your laptop, just find a PC monitor to do this with. to "flip" the screen to different angles you will have to be logged on.
Hope this helps, i you have any further questions just ask
I would try a couple of things. First and cheapest way is to try and update your driver. If that does not work, then try to remove and reseat your memory card(s), and if all else fails you will need to buy a new graphics card approx 75 to 150 depending on how good you want to go.
I have an IBM think pad that developed a 2 inch black strip on the left side of my dispaly. I tried restoring to a previous setting, I updated video drivers, I reset display properties. None of the above worked and am now thinking of formatting and reinstalling windows as a last hope unless someone has any other ideas.
Even though your computer screen has good black does not mean the computer is gone, first try the fn button on left bottom of the key board, hold this down with the f1 fey or the function key that has a light bulb on it.or the f8 fey with the sun on it. If these do not work, or the f3, try these first, then If these do not help, se if you have a local flea market that has a computer shop, these are people who are much cheaper than retail and sometimes much faster. If it is an older computer you can hook it up to a desk top montior and use it as if it was a desk top instead. I had one that the screen is broke off, but the computer still works through the montior.