Sounds like the old hard drive had failed and therefore the EASEus TOTO backup would not work on the brand new SSD drive. The advantage you can gain by switching the cables around to make your PC see the new SSD drive on the SATA 0 port on your PC Motherboard instead of the way it sounds like you have it now, is that your C: drive will boot Windows like 10X faster than it did with the old mechanical hard drive. If your SSD drive won't boot with your PC, you might have a failure in one or more of your RAM sticks, and need to do hardware testing to check that as well as your Motherboard.
Suggest you use the Memtest86+ test as here:
Memory Diagnostics If Memtest86+ runs, and it needs to run at least 8 passes to do so with no errors, your RAM is Ok, as long as you test all sticks individually as well as all sticks together, again for 8 passes; which can take from 12-24 hours depending on how much RAM is in your PC. These figures are for W7 computers with 4GB of RAM or more.
If you cannot get the SSD drive to boot Windows as your C: drive, make certain that you
DISCONNECT and
REMOVE the old drive while attempting to do so. It's likely that the old drive has failed (part of why you are replacing it no doubt), and could be interfering with your boot process. If it works, your good to go and can then reconnect your old Drive as a secondary data drive to D: once your W7 boots up on the new SSD drive ok.
If the problem persists, most likely something in your Motherboard has failed and you will need to take it to your local repair shop and pay a licensed Tech to determine if that's the case. If the Mobo has failed, expect it to cost from $400-$1,500 or so; probably more than the cost of your PC or laptop, unless you built it yourself from very expensive parts.
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