yes the light swith turn it to the right.
Remove power cable
The screen on a Windows XP computer can be made less bright by going to the display settings in the control panel. From here the brightness can be moved up or down with the slider to the desired level.
change the appearance of your desktop
system
Display
If you are looking to change desktop properties or change the wallpaper, go to Display on the Control Panel, then go to the Desktop tab at the top.
Control panel
Network Connections .
Yes, the resolution of the computer screen can be changed in the settings. Depending on what type of computer you have you should go to the start option and click on the control panel. Once you are in the control panel select display and the display settings.
Right click on Taskbar > Properties.Go to Start Menu tab and click on Customize. Find Control Panel in the list and check the option to Display as link.
You only need it if you have an NVidia GPU installed on your computer. It is the tool that allows you to alter your display configuration for your NVidia card.
You can go into control panel and double-click display, or you can just right click on an empty space on your desktop & choose properties. If you are using an Nvidia card, choose "NVIDIA Control Panel" in control panel, or in the desktop popup dialog instead of properties.