I have not found anything on this subject so I hope someone can help. Originally had a Dell XPS 420 with 32 bit Vista and eSATA worked great. I recently installed clean 64 bit Windows 7. Everything went smooth - all is great except for eSATA. I downloaded the 64 bit version of Matrix Manager...
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I just upgraded from Vista 64 Ultimate to Win7 Ultimate. Just want to give you all a head's up regarding my experience. I had two failed upgrade attempts (got to the end and then Win7 setup would revert back to reinstall Vista).
The problem was that I needed to update my Intel Chipset drivers...