Local and remote computers can be displayed on the screen of another computer by using a software solution such as Windows Remote Desktop , VNC, or Web-based services. This approach has the advantage of giving you access to other computers without a KVM switch, but has the disadvantage of prohibiting boot access to the remote machine. This means that you won’t have access to the BIOS settings of remote machines through this method, since the computer has to be running software or services to enable access. If something prevents the other computer from booting, you’ll have to connect a monitor to it to see what the problem is.
Windows Remote Desktop is a solution offered by Microsoft that allows one Windows computer to access another Windows computer over the LAN, WAN, or Internet. To setup and configure Windows Remote Desktop on a computer, a monitor will have to be connected to it. Make sure it’s set to log into Windows and to start the remote service automatically so that you can connect from another machine.
Like Windows Remote Desktop, VNC is a software solution that will allow you to use two PCs with one monitor without requiring a KVM switch. Several VNC solutions are available from different vendors and they come in both free and premium versions. This option gives you cross-platform access to Windows, Unix, Linux, and Macintosh systems.
Online desktop sharing services also exist, such as GoToMyPC.com and LogMeIn.com. These services provide yet another way to view the screens of multiple computers on one monitor without a KVM switch. Like the other software solutions, a software program needs to be loaded on the computer in order for it to be accessible.