I recently came across an issue. One of my users came to me telling me their date and time was off so they couldn't login to the network. I had them bring it in and they were right. Windows thought is was May 30th, 2099, 3am. I went into the bios thinking maybe the battery went wonky, the bios time was off too. I reset it and replaced the system battery and booted back into BIOS and the date was still right. Booted into windows and it stated it was May 30th 2099. Went back into the BIOS and the date had changed to 05 30 99. After messing with things including flashing the bios I opted to try moving the drive to another system of the same setup. I checked before installing the drive that the current system was normal. Now here is the oddest parts. I put in the "bad drive" into the new shell, and went into windows. The date was May 30th 2099 again. So I figured, well, there needs to be an issue with the drive setting the BIOS time and date even though I didn't think it could. I put the "good drive" back in and make sure the date is correct in BIOS. Then booted into windows. Now THAT hard drive is reporting that its May 30th 2099. I am at a total loss here. I thought windows got its time from the BIOS and not vise versa. I have never seen this before in my 17 years of doing this. Any ideas? thoughts?