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#21
Is this a mouse issue? Did you try another mouse or type of mouse?
You can run these operations from Win7 on the other hard drive to be safest, then it doesn't need to hold everything in memory while it reboots to apply the changes which poses some risk. But I'd still have my files and a Win7 image from that drive backed up externally or to another drive. You should do this anyway. Backup Complete Computer - Create an Image Backup
Backup User and System Files