System clock edited somehow...

I have a problem at work on the computers, i work for a company named PHG, and somehow (i am guessing BIOS??) the time has been edited from showing eg: 11:16 to f**kPHG11:16
This is a problem as profanities offend the people who work on this affected computer, and when certain software is loaded from CD which reads from windows the time format to display it in the appropriate format, even though its not the actual time, but the time a file was created it also displays in big black letters along with the time f**kPHG:09:55:45 (as in 9:55 and 45 seconds) so it seems an extra field has been added to the time. (the extra : i nfront of the 09 makes me think this...)
Another thing i noticed is that if you double click on the time in the system tray to open up date and time properties whereas on an unchanged system, the time is aligned to the left side of its edit box, wheras on the edited system it has been moved to the right as if something is infront of it.....

Any help on how this was done and how to rectify it ASAP would be much appreciated!!