Please excuse my bad english, i will give my best.
My LanpartyUT NF4 Ultra-D has unrequested rebooted every Day in shorter Distances.
I have Tried a single Core CPU, an other Graphicscard, Power Supply Unit, HDD and Ram. Without an effect at the Reboots. My Last Hope was an Bios Update with the newest Bios on the DFI Homepage and the Winflash Utility. After the reboot only the HDDs are running, no Picture was seen on the monitor.
After that all, i am not sure what is to do. The RMA section on http://www.dfi.com.tw/RMA/rma_request_step0_de.jsp doesnt work or i am to silly. The Mainboard was bought at 12.September 2006 in an little Computerstore.