Recently when booting up the Desktop [Vostro 3681] the BIOS Screen comes up and says that the clock is wrong. This usually happens once a day at first boot. Have changed the battery on the motherboard but this hasn't solved the issue.  

When correcting the time on the BIOS Screen, the "Apply" button is greyed out so I can't save the settings.

Anyone across this before...I assume that we can still use the Desktop until we either get a fix or have to but a new one.....

TIA.....