Date time not updating computer

I think, something is broken when the laptop shut down due to overheat, as it's not taking into account of the time when it's turned-off. If it doesn't work it's probably the CMOS battery, although that's a bit odd.

These are jpg's on my local PC - not a web server, thus no url available. How do I attach images from a local picture to these queries? Why is AVG not updating the last computer scan date after a comprehensive scheduled scan?If you are using Windows 7, Windows 8, or Windows Vista you then need to first double-click on the time and then click on the option labeled Change date and time settings.... You should now be at a screen similar to the ones below where you can change your date and time.Simply change your date and time at the above screens and then click on the OK button.I went to the services panel of the Windows, located "" and set it to auto-boot, as it was disabled in the start-up previously.I shut down my computer and started it again after 15 minutes but it was again showing the last boot time (15 minutes ago). Reset all time-related settings to default and reboot.