I have a Envisions pc monitor EN7750 that when I turn on my pc it turn on then screen goes black that said (input not supported). I try every thing I can do and nothing works. I have been told that I need to download a driver for this monitor, But can not find on line a driver for this monitor.

Start pc in safe mode and try to change resolution.
Then update the graphics driver.

In regards to your issue with your monitor: For a monitor to display "no signal input" there is likely a problem with the monitor making a connection to your input source (yes I know duh). First and easiest thing to fix this is to check your cables going between your computer and monitor, if your computer and monitor start out working and then fail to communicate, there is a good chance that the cable might be coming loose just enough that the connection fails. I might suggest that if you have, as you say another computer, that you try swapping monitors to check where the problem lies.

Hope this helps some.

Sounds like you have something overheating in the screen pull the back cover and blow it out.

Sir,
This happens when you have set a resolution that's not compatible to your Envision EN7750.Have u used the same monitor before with your Pc successfully? If you have just bought it and have got another monitor which worked with your Pc then connect that monitor monitor again and change your display resolution to 1280x1024 (its the default resolution supported by EN7750) and then connected back your Envision Monitor and it should work.

If you need assistance on how to change display resolution,then let me know.Hope it helped.

My monitor has been switching connections on me randomly. Hit the menu button. The one to the left of the power butter when facing the screen. Hit the left arrow twice then hit the menu button again. This will open up the screen where you can choose one of three inputs. I'm going to assume that it is on the incorrect input so use the arrow keys highlight what input you are using and the hit menu button again and your screen should return to normal. Mine only does this randomly when it goes into screen saver, hibernate or sleep. I don't know how to permanently get it to stop doing it though.

Please read below and look at the pictures of failed VIEWSONIC nd othe monitor before try to DIY repair.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

Yes, you can try reducing the refresh rate to 60 Hz.
You can change this option in Display option in control panel.In the display proreties dialog box under settings tab,click on advaced button.click on Moniter tab.there you can find screen refresh rate option,change it to 60 Hertz.
This would solve your problem.

my older monitor had a similar problem but instead of black its bright white and it keeps auto adjusting but not right it goes off screen. i still use it just not as a main monitor as it is old. erm see if its it warranty if it isnt then you probably need to get a new one

reinstall windows ur screen resolution is not accepted by monitor

This is a duplicate post, click the following link to read the active posting: http://www.fixya.com/support/t138012-sony_sdm_hs74p_s_17_monitor_stay_right