Envision model H190L ser#91077CA000122 cannot change resolution
Monitor used with G-5 Mac..cannot change resolution from 800x600 in the mac's system preferences display window... when 2 monitors connected, then I can change the resolution on both the H190L and the other monitor. please help.
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Re: envision model H190L ser#91077CA000122 cannot change...
Mac's a bit differant than windows. To change your screen resolution first change the monitors refresh rate to something like 75 hertz. Than you can change the Screen resolution. Thats how it is done on a windows machine. Than again your Mac might need a video card software update.
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You may wish to try this (my model AOC g2016wa2) 1. push MENU button 2. scroll to Advanced 3. push MENU button 4. scroll to Factory recall 5. push MENU button It resets the power button locked setting but you lose all other settings.
I had a similar problem with a Mac Mini. The problem was caused by a mix-matched resolution (the Mac tries to use 75Hz refresh rate, TV expects 60Hz). The best solution I found was to remote into the Mac (I used LogMeIn.com) and change the resolution on the Mac from a remote computer until the image appears on screen.
1) Connect Mac to a normal monitor and install the LogMeIn server (or other VNC type application)
2) Connect the Mac to the TV
3) Connect to LogMeIn from another computer (preferrably one where you can see the TV)
4) Go to Applications / System Preferences / Display
5) Change the resolution to your TVs native resolution, and change the refresh rate to 60Hz
Without knowing any more about your system I can only give you a couple of general ideas.
First try updating to the newest video card drivers possible.
You can try going to the drivers tab in display adapters in device manager and click update drivers.
Failing this, if your system is more than a few years old you will probably have to update to a more current video card to get the resolution that you need.
The native resolution for your screen is 1280x1024.