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Right click my computer ,go to properties ,then click hardware tab ,then go to device manager when device manager opens ,on the right pane u will find monitor listed on clicking the + mark you will find Plug & play monitor listed, right click on the monitor ,you will get a option update driver ,then locate the driver files,&that's it.
You have not installed your graphics card drivers!
The drivers are here --->
Since I dont know which graphics card you have you will have to try each one... dont worry if the driver dosent find your card it wont install.
Do you know the full model number of your system , it is printed next to the serial number if you give me this number I can link you directly to the driver
You need to change the monitor type. If you open the display settings and then setting tab-advanced-monitor you see a properties button. Click that and then the driver tab on the new window. What you need to do is go to Acers website und get the "INF" or driver file for your monitor. download and save this file. Then go back to the drivers window and click the reinstall drivers button and then point it towards the file you downloaded. This file lets windows know what settings the monitor can use. After that is installed and you go back to the settings window you should find that the allowed display resolutions have changed. You should be able to change it to one the monitor displays properly now.
Right-click on your desktop. You are not going to look for a "monitor" but you're going to be looking for "display properties." So, after you right click on the desktop, click on the properties and it should show you the resolution in the lower left of the window (assuming you're using XP) Vista and Windows 7 use "personalize"\." Anyway, assuming the correct video drivers are installed, you can change the resolution within those menu items.
The resolution is set from the computer.
Monitors will have a max resolution, but you will set it up from the display settings.
Most likely your video card or video driver is having the problem.
Right click "My Computer" then click "properties"
Click Hardware tab then "Device Manager"
If you see a yellow or red mark over the video then you need to download the video driver uninstall the old one and reinstall the new one.
You can the driver from the manufacturer website of your computer brand
Almost the same steps
Right click "Computer" then properties
Click on "Device Manager"
If there are no yellow or red marks on the video device
I would recommend following the dell troubleshooting guide for your monitor
If you just want to adjust the display settings so that they are more to your liking go to Control Panel and open Display. When the Display Properties box opens click on the settings tab. Use the slider bar in Screen Resolution to adjust to 1024x768 or whatever resolution your monitor displays best at. To the right use the pull down arrow to select the highest color quality you can select. Then click on the Advanced button on the bottom left and you should see a Monitor tab. Click on that and ensure your refresh rate is 60 Hertz. Save your settings, accept the change confirmation when it appears and your monitor should be good to go. I have about 90 Dell LCDs and the default Windows drivers for the LCDs usually work great.