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Bitlocker with TPM


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#1 Andy1954

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Posted 31 July 2011 - 03:17 PM

I just purchased a Dell XPS with Windows 7 Ultimate. When I tried to activate Bitlocker on drive c:, it says my computer doesn't have a TPM installed. I don't get that message on drive d:, which is, according to Dell, just the restore partition for the machine. Dell was absolutely zero help in finding the TPM and activating it, but swears I should have it. How do I find out for sure, and turn it on so I can use Bitlocker? I don't want to use it with thumb drives as I travel a lot and worry about losing all my recovery keys.

Thanks,
Andy

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#2 MarkGS

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Posted 31 July 2011 - 05:46 PM

Trusted Platform Module (TPM) chip, it stores the cryptographic keys needed to encrypt and decrypt your hard disk or partition . This isn't *required* to use bit locker. The TPM chip is a hardware storage of the encryption key, So only that computer can access the encrypted DATA. You can sill encrypt the disk using the software, it will save the key in windows and not lock it to specific hardware, so you could hook up the HDD to another computer enter the key and get the DATA off. What model Dell XPS did you purchase, perhaps I can help find out if it does actually have the TPM chip.

#3 Andy1954

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Posted 31 July 2011 - 06:10 PM

It's an XPS L702X. I know I can apply bitlocker with a thumb drive, but would prefer not to. Win 7 Ultimate - 64bit

Edited by Andy1954, 31 July 2011 - 06:11 PM.


#4 MarkGS

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Posted 31 July 2011 - 06:18 PM

When you don't have the TPM chip it doesn't have to go on a thumb drive because the keys are stored within Windows. I don't believe the chipset for the model has the TPM chip http://www.intel.com/content/www/us/en/chipsets/mainstream-chipsets/mobile-chipset-hm67.html Looks like the TPM chip is only on desktop Intel chipsets. http://www.thinkwiki.org/wiki/Intel_GM45_TPM_device_iTPM_INTC0102

#5 Andy1954

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Posted 31 July 2011 - 06:42 PM

I guess that makes sense. No point in encrypting the drive if all someone has to do is break my password to activate the laptop. I'll have to use the non-TPM option. Thanks for the help.

#6 MarkGS

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Posted 31 July 2011 - 06:44 PM

I guess that makes sense. No point in encrypting the drive if all someone has to do is break my password to activate the laptop. I'll have to use the non-TPM option. Thanks for the help.


I wouldn't worry about that. And no problem.




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