After some web research I found some useful stuff which may be applicable for you. Here I can give some steps to configuring Windows Time service to use the workstation's internal hardware clock
To configure the Windows Time service to use an internal hardware clock, you can change the announce flag on the authoritative time server. Changing the announce flag forces the computer to announce itself as a reliable time source and to use the built-in complementary metal oxide semiconductor (CMOS) clock. To configure the Windows Time service to use an internal hardware clock, follow these steps.
This is for WindowsXP machine. I didn't tested in another operating systems
1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry entry:
3. In the right pane, right-click AnnounceFlags, and then click Modify.
4. In the Edit DWORD Value dialog box, under Value data, type 5, and then click OK.
5. Enable NTPServer.
a)Locate and then click the following registry subkey:
b)In the right pane, right-click Enabled, and then click Modify.
c)In the Edit DWORD Value dialog box, type 1 under Value data, and then click OK.
6. Exit Registry Editor.
7. At the command prompt, type the following command to restart the Windows Time service, and then press ENTER:
net stop w32time && net start w32time
8. To reset the local computers' time against the time server, run the following command on all the computers except the time server:
w32tm /resync /rediscover
ThanksMANU PHILIP Microsoft MVP(Exchange Server)| MCITP | MCTS | MCSA
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