Samsung 840 SSD preventing Windows Startup

Sep 17, 2018
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I currently use Windows 7 home edition x64 and I have reason to believe that a recent failed windows update has corrupted the SSD I was using as a boot drive (a Samsung 840 120 GB SSD). My computer wouldn't boot into windows and would stay on the motherboard splash screen.
I tried a number of suggestions I found on here (e.g., removing the CMOS battery), but nothing seemed to work. I did a bit of digging and found a suggestion that unplugging the SATA power on the SSD would at least allow me to boot from an optical drive to install Windows on another drive. Indeed, unplugging the SATA power on the SSD allowed me to get into my system BIOS. I have since purchased a new Samsung 860 250 GB SSD and reinstalled Windows, and things are working fine, but there is a lot of data and programs on my old SSD that I would like to salvage.

When I did a fresh install of Windows, I made sure to unplug any other hard drives that were attached. Now that I have completed the install, installed all the necessary drivers, and downloaded and installed all the windows update files, I wanted to see if I could access my old SSD. I plugged it back in and my computer stays stuck on the motherboard splash screen as it did before. It seems that as long as the SATA power is plugged into the old SSD, it will prevent my computer from booting all the way into Windows.

Here are my system specs:
Motherboard: Asus P8Z77-v Pro
Processor: Intel 2500K
RAM: Corsair Vengence 4GB x 2
PSU: Corsair HX750
GPU: MSI GTX 660
Hard drives: Samsung 860 250 GB; Samsung 840 120 GB; Western Digital Black 1TB 7200RPM
 
Solution
try mounting the old ssd in an external usb case.

You can get windows started before you mount the old ssd.

Alternately, check your BIOS settings to see what your boot order is. make sure that your new ssd is the primary boot disk.
try mounting the old ssd in an external usb case.

You can get windows started before you mount the old ssd.

Alternately, check your BIOS settings to see what your boot order is. make sure that your new ssd is the primary boot disk.
 
Solution