Friends new computer built by local firm. Vista Home Premium Asus P5N-E SLI Socket T Motherboard Viewsonic VG2021M Monitor Intel Core 2 Duo E6550 2.33 Ghz Cooler Master Case with 420 PSU Asus nVida GeForce 8400GS PCI-Express Video Card If the monitor is turned on prior to starting the computer everything boots and works okay. If the computer is turned on and starts Windows before the monitor is turned on, the monitor stays in standby (sleep) mode and the only way to get out of standby mode is to reset the computer. If a device is installed i.e. USB keyboard, Printer, etcetera on the computer. On reboot, the monitor stays in standby mode and the only way to get the monitor out of standby is to reset the computer even if the monitor is already turned on at the switch. Any insight to what might be causing the problem would be most welcome.