I would venture to say that the boot file is somehow missing, or didn't get copied over in the clone (as IrvSP said, the U/EFI partition that contains the boot files). Not sure how it happened, but I have experienced this imaging windows 7 machines. The proper partitions weren't imaged, so there was no boot when I restored the image. It wasn't until I re imaged the machine with the correct partitions. I think it was D, there were different partitions up to E: which didn't have the boot files. I confirm what IrvSP is saying. They were special additional partitions for diagnostics and drivers (it was a dell PC), that I would get boot. I am thinking it has to be related to Lenovo's configuration for the recovery partition, or the cloning software you used. That's why it's always better to use highly-rated programs that work. You may have to buy them. Acronis makes the best imaging/cloning programs out there. They have a free trial, use it and keep it for 14 or whatever days and let it expire. I've used it extensively to image/clone servers with no trouble. It's worth the weight in gold to get consistent clones and images. It will copy everything, recovery partition, your apps, programs, etc. and you'll be good to go.