Scenario: You have a SLED desktop. You have installed Windows XP on your lab machine. You want to access the Windows box from your desk. You can do this by installing VNC on your Windows machine and run vncviewer from your SLED box.
While accessing the Windows machine from your desktop, you noticed that system is not accessable after some amount of time.
This is because Windows system is going to standby mode after some amount of time since System Standby option is set. To bring this back to normal mode you need to be present at the physical location of the machine. Until then you can not access this machine remotely. Disabling this option will solve the problem.
How to disable System Standby option in Windows machine?
To do this, you need to go to the physical location of Windows machine and then right click on the main screen to select Properties. From the Display Properties screen select Screen Saver menu and click on Power button. You will get Power Options Properties screen. You can see the System Standby is set with some time. Click on drop down button and select Never. This will stop Windows system going to standby mode.
Captured when the system turned to standby mode while accessing it from SLED desktop
Shows how to disable the standby mode in Windows machine.