How the hell to undo screen resolution changes?

[Space Toker]

I was monkeying around with pc screen resolution settings. I have pics that when I attempt to use them as a screen saver, they are just a small pic in a box instead of full screen. Well, in the process, I set something to 256 bit high color instead of the setting it was for the longest time (will later figure out what that was). Something popped up and asked if I want to change something and I said yes. Now I got a screen with blown up psychedelic swirls and everything is huge (too huge for screen to handle). When I click on my user account, my screen saver pic looks like a negative, only with color. I tried and failed numerous times trying to use system restore, something is blocking it. Any help is desperately sought and well appreciated. thanks!

 

[Space Toker]

It is a Dell computer and HP monitor. The messed up setting I changed it to (and that it is now stuck in) is "640 by 480, 256 colors, 75 hertz"....
It originally was (and I want to change it back to) "1680 by 1050, true color (32 bit), 59 hertz".

 

[iTarzan]

http://www.dell.com/support/article...bsd&cs=04#Set-or-Change-the-Screen-Resolution

 

[Space Toker]

thanks for the link, but it is not working. It refuses to restore to an earlier point, and to the proper resolution. I wish I hadn't monkeyed with it, but now I need to find a way to get it back to normal. thanks!

Edit, 5 minutes later: I did a system restore to an even earlier date, WHILE IN SAFE MODE, and now things are back to normal. I will NEVER do that again!
But if anyone knows how to get a smaller pic to fill the screen without becoming pixelated or distorted, please let me know... thanks!

 

[BOMBAYCAT]

I don't know Dell computers, but is there an option somewhere in tools to reset back to the original factory settings?

 

[Jaqen H'gar]

Right click on your desktop. Go to change display settings.