It has been reported that in certain circumstances the system will shutdown instead of rebooting itself when the user restarts it while Private Disk is running and an encrypted disk is mounted.
This was a problem difficult to trace; while it repeats itself 10/10 times on a "problematic" machine, on "non-problematic" ones everything is working correctly and it is impossible to simulate the problem.
This is what makes it of reason to make an educated guess that this is caused by a third-party component present on the system, which somehow alters the standard behaviour of Windows. The tough part is that even when you think you have disabled all the non-standard programs, there is a myriad of low-level components that one can't see with the naked eye.
If you're looking for a way to re-install the smart card service on Windows XP, this story is your new best friend!
Steps 3 and 4 are optional, but if you're someone who tinkers with the service, I'm sure you want to know what's in there.
If you examine scardsvr.inf you will see that it contains references to a list of files and registry keys. These actions could be performed manually, the effect would be the same; but using an .inf file is much easier.
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