I have a server running Server 2008 R2 and it's been ticking along quite nicely for a few years now - until today. The server installed an automatic update (not sure what they all were but I did notice IE10 was among them) and rebooted itself but things didn't seem to be running quite right. I went to get a cup of tea and when I returned the server had rebooted again and when I logged on there was a message saying that windows had recovered from a serious error. I rebooted it once again but no clients could connect to it, it is not giving out DHCP addresses and generally no longer 'serving'. When I try to log on, I get met with the following message and cannot log in. There is a time and/or date difference between the client and the server. I have tried connecting in using remote desktop and also locally but always get the same message. I have disconnected the network lead but again, the same error. I have no idea what 'client' is triggering the error, especially when there is no network connectivity. Does anybody have any ideas how I might get this fixed? **EDIT** I think I may have found the culprit - looks like the CMOS battery is dying as the bios date had reset itself to default.