Hello, I have a Compaq Presario SR5109UK Desktop. I have added a secondary hard drive. To do so i needed to install a Sata port card. I installed a 2 port 6gbps PEXSAT32 ( also seems to be known as Marvell91xx ).My pc cannot find the card, so obiously it can't find the hard drive either.I am not by any means a computer expert. I have googled the problem, but i can't find a solution. Under device mamager the card does not show up. But it was installed perfectly....
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Try installing the card in another slot. You don't even get the "found new hardware" message?
Make sure the card is properly seated in the slot. It may help to unscrew the bracket for a test.