Download a program called Belarc Advisor. It will tell you what all those
Unknown Devices are. It's pretty thorough, and it also checks for hotfixes
and tells you what versions of the programs you have installed. I like it a
lot for a freeware program.
The device is a TPM 1.2 chip, which can work with Bitlocker to encrypt your
hard drive. If you don't plan on using Bitlocker right now, you don't need
to worry about it. There should be a driver available at the hard drive
manufacturers web site, though.
Simply download the driver from ibm site for National Semiconductor Trusted Platform Module (TPM) download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_drivers/q1tpm02us13.exe
run the file, it will be extracted to c:\swtools\driver\NSCTPMDriver\q1tpm02us13 meanwhile an error message will be shown ignore it and run setup from given path and it will do the rest.
I have just installed it in windows 7 ultimate. This driver is for windows XP but works in windows 7 as I have told you the way.
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