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#141
Laptop hard drives are what's in most external drives, so you can buy an external case to put the drive into and connect it by USB. Most laptops don't have a second drive bay unless you remove the DVD drive. Then it's always powering a secondary drive you may not need that often. So an external is a better storage option in most cases.
To apply the image elsewhere you can use a more flexible imaging program to save the image like Imaging with free Macrium which will let you recover the image to another partition or hard drive, then apply it to the wiped HD (Clean command you used) in the other PC from external drive using booted Win7 installer System Recovery Options, Then you must boot another disk to Make Windows 7 bootable after motherboard swap