I have just come through a similar situation. Due to a short, the SMPS power supply in the cabinet started to malfunction and supply incorrect voltages to the motherboard. This caused all sorts of errors to be reported including not booting properly, freezing the keyboard/mouse and demanding software updates. I would suggest that you replace the SMPS and see. Additionally my motherboard hardware monitor (A utility supplied on the motherboard CD) informed me that the motherboard was receiving 5.9-6.0 volts instead of 5 volts. Hope this helps Maninder __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com To unsub or change your email settings: //www.freelists.org/webpage/pctechtalk To access our Archives: http://groups.yahoo.com/group/PCTechTalk/messages/ //www.freelists.org/archives/pctechtalk/