Posting a question on behalf of a friend. New computer with Vista Home Premium, components includes the following. Asus P5N-E Socket T Motherboard. Asus nVidia GeForce 8400GS PCI-Express Video Card. Intel Core 2 Duo E6550 2.33Ghz CPU ViewSonic VG2021 Monitor. The machine works perfectly apart from one problem, which is; After installing a USB device such as a Keyboard and Mouse, or a printer the monitor boot up in (sleep mode?) and canÿt be woken up. The only way to get the monitor to be seen is by pressing the reset button which gives the message that the machine has been incorrectly switched off. The computer and devices then works correctly without a problem. Yesterday, they had a cable modem installed onto the Ethernet connection and the same problem happened again - reboot and monitor in sleep mode forcing a reset. Power setting has the ´never turn off hard drive or monitor set¡. Can anyone suggest a solution to this problem? Or is the situation normal with Vista?