iRotate is a tiny tweaking tool designed for Windows that allows you to rotate your screen. It's the one tool you need when you find out your video drivers can't help you in the “screen rotating” department.

It is one of the simplest application we ever had the pleasure of working with, so users with any kind of experience level can deal with iRotate.

Installing it is very simple, and iRotate will put itself in the system tray, so there is no interface you have to play with.

Right-clicking the application will bring forth a menu where you can select technical support, display properties, or rotate the monitor (normal landscape, 90 degrees, 180 degrees, or 270 degrees).
There are also hotkeys available, so maneuvering this program is done with ease.

Double-clicking iRotate in system tray will open the Display Properties window, where you can select display, resolution and orientation (landscape, portrait, flipped landscape, or flipped portrait), found in Windows.

In addition, you can make text and other items smaller or larger (it requires you log off Windows in order to apply changes).

When it comes to CPU and memory resources, iRotate is barely noticeable, so it doesn't put any strain on your computer system.

All in all, if you want to change the orientation of your monitor screen, and your graphic drivers are not up for the job, then iRotate is the simplest application that can help you do that. Besides, it's free to use, so give it a shot!