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Windows 7: Time is always wrong

1 Week Ago   #11

Dual Boot Linux Mint 32-bit / Windows 7 Professional 64-bit

I have dual boot Linux / Windows. I discovered an anomaly between Linux and Windows: Whenever I would boot into Linux, then exit Linux and boot into Windows, the time shown in Windows would be five hours off! I found that the cause of this is that Linux uses UTC (Universal Coordinated Time or Greenwich Mean Time) and converts from there to local time, whereas Windows uses local time. Consequently, every time I would go from Linux to Windows, I would see UTC rather than my local time.

I fixed it by doing a registry edit in Windows:
  • I went into the Windows registry and navigated to here:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\TimeZoneInformation
  • I right-clicked in the right pane and selected New / DWORD (32-bit Value) -- "RealTimeIsUniversal" (without the quotes).
  • I double-clicked on RealTimeIsUniversal and changed the Value from 0 to 1.
I rebooted into Linux, and then rebooted into Windows. Problem solved!

After doing this, I discovered that the computer BIOS was showing time in UTC. But that's ok, because both Windows and Linux now show the correct local time.

There may be something you could do in Linux rather than in Windows to fix this; I did this fix in Windows.

My System SpecsSystem Spec
1 Week Ago   #12

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Well I am no expert at all but maybe this will throw some light on it too Jim I am only guessing here because I am not that familiar with Linux stuff

Dual Boot: Fix Time Differences Between Ubuntu And Windows ~ Web Upd8: Ubuntu / Linux blog
My System SpecsSystem Spec
1 Week Ago   #13

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1

Thank you mrjimphelps and John for helping out BLUE838.
My System SpecsSystem Spec

1 Week Ago   #14
The Howling Wolves

Windows 7 Home Premium 64bit

Had same problem so I replaced the battery on my laptop.
Works perfectly now.
My System SpecsSystem Spec
1 Week Ago   #15

W7PRO/ULT 32/64

My 2. It may not be the solution you are looking for, but you might make a Task Scheduler - Time_Synchronization - in Windows to update the clock when you reboot or even at an interval you want. I don't know how to do this in Linux. I create one to update my clock every 4 hours.
My System SpecsSystem Spec

 Time is always wrong

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