I often have problems shutting down my computer properly, and I can't seem to track down the exact cause for the issue.

It happens every few weeks: once in a while I will attempt to shutdown my computer and everything seems to go just fine - except for the fact that the power button is still lit at which point I'm forced to hold that button down until the computer shuts down completely. As I said this happens every few weeks (although it seems to be happening more frequently as of late), and I've tried everything I can think of to resolve the issue - multiple virus scans report nothing suspicious, SFC and CHKDSK scans are fine, I've turned off hybrid shutdown (and gone through the power settings as well)... I don't get it.

What is interesting though is the fact that a TPM error precedes every instance of this problem. Whenever I go through my event viewer after the problem occurs, I will find an error telling me that "the device driver for the Trusted Platform Module (TPM) encountered a non-recoverable error in the TPM hardware, which prevents TPM services (such as data encryption) from being used.

Every. Single. Time.

Without fail. It could be 30 minutes before the problem, it could be several hours. But it ALWAYS precedes the shutdown problem. At this point I've taken to checking the event viewer every half hour because I know that if I spot that TPM error, then BANG - I'm going have a problem shutting down the computer later.

I don't know anymore, I'm just hoping somebody here can help because I'm not nearly knowledgeable enough when it comes to computers.

Everything else seems to work fine, and I'm not having any other symptoms. I just want to know why I'm having this problem every once in a while and what the connection is between that and the TPM errors.