Dell 990 optplex vs Dell 790 Optplex

I have a 790 in which the hard drive is giving me issues so I switch it with a Hard Drive from a 990 optplex.  I thought I could just boot into safe mode and uninstall the drivers, however, it's not letting me.  I've tried, startup repair, and repairing it from the cd nothing is working.  any suggestions.
WellingtonISAsked:
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WellingtonISAuthor Commented:
That looks like a great product however, I did a sysprep on the 990 and installed it on the 790.
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Thomas GrassiSystems AdministratorCommented:
Yes you need to do a fresh install of Windows 7 I would do a full format of NTFS also.

Reason is that the drive from your 990 optplex as the OS installed with hardware specfic devices that are different from your Dell 790.

Would be nice to do what your are trying but they would have to be the exact model for that to work. Same when cloning you need to clone same model computers.

Otherwise you will have many issues
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WellingtonISAuthor Commented:
OK there's no way to redo the drivers?
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Levi GwynCommented:
Unless the processors and chipset on both machines are identical, I'm not sure you can do this.  The peripherals such as video card don't matter but the HAL (Hardware Abstraction Layer) is chipset and processor specific.

For instance, if the 790 has a dual core processor and the 990 has a quad core, the HAL will fail.
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Thomas GrassiSystems AdministratorCommented:
No as I said they need to be the same model

Sorry reinstall time

Is the drive in the 790 totally dead?

If not you could download
http://www.acronis.com/homecomputing/products/migrateeasy/

then you can copy your old hard drive to the 990 drive


acronis is a great prodcut can bypass bad sectors

That might be faster than a reinstall only if the drive in the 790 is ok
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WellingtonISAuthor Commented:
I"m going to do a sysprep and ghost and install it to the 790.
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nobusCommented:
you can do what you want with paragon migrate OS to other hardware :http://www.paragon-software.com/home/solutions/migration.html?id=0002
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WellingtonISAuthor Commented:
I fixed this myself, I syspreped the 990 and installed on the 790 it worked.
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