http://blogs.technet.com/perfguru/archive/2008/02/18/explanation-for-the-usepmtimer-switch-in-the-boot-ini.aspxHello All, This post covers the use of the USEPMTIMER switch in the boot.ini and also shows how it affects the operating system Symptoms Dual Core or multiprocessor AMD Opteron processors may encounter Time Stamp Counter (TSC) drift in certain conditions.en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/perfguru/archive/2008/02/18/explanation-for-the-usepmtimer-switch-in-the-boot-ini.aspx#2908389Tue, 19 Feb 2008 02:16:47 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:2908389Lost Drive Blog » Explanation for the USEPMTIMER switch in the boot.ini<p>PingBack from <a rel="nofollow" target="_new" href="http://lostdriveblog.com/2008/02/18/explanation-for-the-usepmtimer-switch-in-the-bootini/">http://lostdriveblog.com/2008/02/18/explanation-for-the-usepmtimer-switch-in-the-bootini/</a></p> http://blogs.technet.com/perfguru/archive/2008/02/18/explanation-for-the-usepmtimer-switch-in-the-boot-ini.aspx#3087065Fri, 11 Jul 2008 03:33:42 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3087065Haneet Kumar<p>In our environment, we saw the issue in Windows server 2003 x64 enterprise edition. I'm assuming that the BIOS check failed. Also, how do I find if we use APIC ACPI HALs?</p>