This is usually due to 1 of 2 things:<br><br>Either the CMOS battery is dying, or the clock crystal is off.<br><br>Since you replaced the motherboard, you replaced both of these items, so the only solution I can see (other than demanding that Compaq get its act together) is to reset the clock on boot. (If the computer is connected to the internet, there are several programs that you can put into Startup to do that.)