Hey, I have a hp 2009m monitor on windows vista and I can not get my screen resolution to fix my screen properly, I have changed it to its highest resolution possible and it is still blurry as ****. My screen is 20.5 inches and I have no idea to make it back to the way it was when I purchased the computer, I have gone through everything possible to fix it on my computer and I can not do it. Any help?

You need to look up what the "native" resolution is for your monitor. And try that setting. Also make sure your video driver is up to date.

For it not to look blurry you have to set it to 1600x900.
If that resolution is not shown check Advanced Settings > List all modes
If your graphics-card does not support that resolution you need to get one that does.

If you set it to 1600x900 and it is still blurry, then the screen might be defictive