Why didt copying my Windows 10 partition to a new location cause my desktop to flash constantly?

Would simply moving my windows partition to an earlier location on the disk, and ruing bcdedit to create a new boot entry, be expected to cause any problems?

Here's what happened:

I had a windows partition that was near the end of the disk (~3tb to ~4tb on a 4tb disk) and I wanted to expand it, so I copied it to free space near the begiing of the (4tb gpt) disk using AOMEI Partition Assistant. Then I used bcdedit to add a boot entry for the newly copied partition. It seemed to start up fine, but upon logging in, the screen started flashing. Explorer.exe was crashing several times per second. It was hard to do much but I managed to taskkill explorer.exe to stop the flashing and look at the system logs. The explorer.exe error is in twinui.dll . There are also errors popping up about attempted memory access to very low addresses like 0x00000000008. I rebooted to a recovery console command prompt and "ran sfc /scaow". sfc got to 100% verifying and then said "Windows Resource Protection could not perform the required operation."

I can boot from the original partition without any trouble.

Please don't bother telling me I need to reinstall windows...