NT Kernel and System eating cpu

Here's the problem i have, and what i know so far.

NT Kernel and system is taking up no less than 25% of the cpu, and making everything lag. Using process explorer i discovered the thread responsible: ntoskrnl.exe"!KeAcquireInStackQueuedSpinLockAtDcpLevel+0x1e0

I've tried suspending, killing, and looking at the permission and it always says the same thing: Unable to access thread.

so far i've tracked to be a driver for new software's "folder lock". I've never installed this program though and have no way of finding it. So i downloaded the windows driver kit, because that way i can examine the data and hopefully at least narrow it down, then google the drivers i think might be it.

The problem is, however, that when i try to install, it says that microsoft document explorer couldn't install, and then it completely "roll's back" as it puts it, its installation. No matter how many times i try, it does this. Both files SAY they should be installable, but they aren't.

This is where i'm stuck at. Any help would be appreciated.

Relevent links are wdk install walkthrough, answer that led me to the problemhttp://answers.microsoft.com/en-us/windows/forum/windows_7-performance/task-mgr-shows-system-consistently-using-50-of-cpu/1188e9e2-4426-468a-a287-08cae81b2c73, company's website

Thank you in advance for your help

I've contacted the company as well, and one of their representatives has offered to try to help, though she does not know the driver in question.

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