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Asus Crosshair VII Hero MB won't boot with PCI-e storage card


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I purchased the below PCI-e card for dual SSD's. I mounted 2 Samsung 860 Evo, 500gb drives on it and now my computer won't boot into windows with it installed. Keeps wanting to repair my system and restarting over and over. I have a Samsung 970 NVME drive in the top M.2 slot.

Am I missing a setting in Bios to make this work? How would I know if my Bios supports this?

Thank you



SEDNA - PCI Express (PCIe) Dual 2.5 Inch SATA III (6G) SSD Adapter (Extended Single Side SSD Version) (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD/HDD not Included - Newegg.com
Buy SEDNA - PCI Express (PCIe) Dual 2.5 Inch SATA III (6G) SSD Adapter (Extended Single Side SSD Version) (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD/HDD not Included with fast shipping and top-rated customer service. Once you know, you Newegg!

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Have you tried with UEFI enabled/disabled in the BIOS ?


Do the Kingston Drives show in the BIOS or does it instead show the details of the Sedna add in card.

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9 hours ago, By-tor said:



It see's both SSDs and not the card..

I have looked at the product page on Sedna, I could not locate a support page with respects to taking a look at the type of drivers that come with the adapter card as I note that as part of the package contents that it comes with a Driver Disk ? 


I would not imagine the adapter card requires drivers as it is a fairly standard adapter card, however you may want to consider mounting the SSD with window on in the system via the motherboard, installing the drivers on the provided disk, then try the SSD again on the adapter card to see if it will boot. 


I say this as the cycle of windows trying to do system repairs may be due to missing drivers on the OS, meaning it cannot boot correctly.

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So likely your best option is to go into Control Panel > Device Manager  and locate the Sedna device, it should be under Host Controllers, however if in doubt it will likely be flagged on the list with a yellow exclamation mark (as it has not go the driver installed yet). After finding the device, go back to the Disk containing the drivers files and extract these to a folder on your desktop so they are ready for use. 


After extracting the files go to the device manager and find the device, right click on it and a new window will pop up, select "Update Driver". The driver install wizard will start, when prompted select "Browse my computer for files". At this step you want to click browse and locate the folder on your desktop with the driver files, it may be helpful to choose the sub folder that containing the drivers for your specific device. Usually the folders will be named as per the device name so you can find the folder containing drivers for your device specifically. Once you have selected the right folder click "OK", now click "Next" and windows will look in the folder you pointed it to for the drivers for the device and with any luck should install it (assuming the device drivers are compatible with your Windows variant)

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16 minutes ago, By-tor said:

I was able to get the drivers installed and now windows see's the controller, but once I install an SSD it won't boot.





Looks like it installed the SATA controller OK. When you put the SSD back on the adapter card, when it boots does it cycle to a windows repair and keep rebooting ? 


Do you have a spare SSD that you could attempt to do a test of install windows on via this adapter card as a test to see if a fresh install works ? If it does then Windows is fine with the controller card and this tells us that your current windows install still needs looking at.  If it does not then we need to look at drivers again. You may find that when installing windows fresh via the adapter card you may need drivers for it to see the drives, but I am thinking it should just see the SSD drives as normal.

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That is understandable, sometimes things just don't work out, some add in components just do not play well with some motherboards. 


Did you get this card due to lack of Data ports or for more convenient placement of the SSD drives ?

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