I am running Windows 7 and Ubuntu (dual-boot) on a Lenovo machine.

I recently installed the GNU/Linux distro. One or two days afterward, I noticed that the clock on the system tray was out of sync by about five hours. On a hunch, I checked the Services applet and saw that the Windows Time service was disabled. Naturally, I changed the setting to AUTORUN or autostart with my ADMINISTRATIVE privilege.

That seemed to solve the problem temporarily. However, the next day the clock was out of sync again. When I checked services, it showed that Windows Time services was "stopped." By the way, the first time I noticed this problem I manually updated the time by GOING into the "time and date" settings. This would solve the problem only temporarily.

Interestingly, I have not had this problem with the Ubuntu partition, EXCEPT today when I noticed the time was out of sync but it quickly re-synced itself a few seconds after logging into the desktop.

At this point, I am annoyed and worried that it might be something more serious. I also tried changing the Internet time server without success (i.e. the clock still keeps getting out of sync by several hours). I only have two other hypothesis to test. The first is that the BIOS battery is dying —this is a laptop, though, so I do not know how the motherboard is set up or whether it EVEN has a BIOS battery or not.

The second hypothesis is malware. I also downgraded my AV software recently. Incidentally, I had some problems with the Windows Firewall not working after that, but it is fixed now.

Any helpful advice would be appreciated.BIOS battery ony shows system time in the BIOS...new battery however is 4 Bucks...part # CR 2032.