And without the make/model machine I can't tell you much more than I've cured it by setting the date in the BIOS and saving the settings in the BIOS screen.

Just asking. Is the Forum Tip not showing during your post? It reads:

"Tip: If you are asking for help to troubleshoot a computer-related problem, please be sure to include all the necessary information (ie: operating system, model number, hardware, software, etc) that will help others identify your problem for a speedy resolution."