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Customer Review

32 of 33 people found the following review helpful
4.0 out of 5 stars Make sure your computer has a TPM chip, March 27, 2011
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This review is from: Microsoft Windows 7 Anytime Upgrade (Home Premium to Ultimate) [Online Code] (Software Download)
In order to use bitlocker, your computer must have a TPM chip in it. If not, you can turn bitlocker on but have to use a USB drive to hold the key file every time you boot it up. An acceptable solution for a desktop, but for a laptop a bit of an inconvenience having a USB drive sticking out of it, plus it takes up a USB port. My 2 month old Dell XPS laptop had the option of having Win 7 Home Premium, Professional, or Ultimate installed, so I assumed I could upgrade afterwards. Turns out they must only put that chip into models shipping with Ultimate already. So double check that if bitlocker is important to you.

Other than this issue, the update process was quick and painless. It seemed to take less time than installing a regular software program since it didn't have to load off the CD and do a lot of registry changing.

Ultimate itself with the XP mode seems a good upgrade for me. A few hardware items and some software just doesn't work with Win 7. Plus I needed encryption for some files. While I use some third party encryption, it's just easier for some files if the OS does it without having to log into another software. Some of the other differences between Ultimate and Professional aren't relevant to me, so Professional was probably a better match.

3/28/11 Additional note: Found a website that says the TPM chip not only handles the encryption key, it actually does the encrypting and decrypting activity so that the CPU does not have to. When using a USB drive for the key, the CPU does the encrypting/decrypting which reduces performance.
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Showing 1-2 of 2 posts in this discussion
Initial post: Apr 1, 2011 3:26:24 AM PDT
CJ says:
Thanks, I was completely unaware of the TPM Chip. How do I find out if my ASUS laptop has it? I assume it would have been listed in the specs?

Posted on Aug 27, 2011 7:07:50 AM PDT
ACE says:
Check your computer BIOS. You may have to enable the TPM from there if it is installed on the motherboard of your computer. The TPM is generally hidden from searches.
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