“When I try to upgrade my Dell Inspiron 3148 laptop from Windows 8.1 to 64-bit Windows 10 using this thumb drive, the upgrade successfully loads files, but fails a few seconds later due to a problem with the CI.dll file (see photo). How can I fix this?”
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my recommendation is: make a backup from docs, pics, music and everything you want to keep and install win10 from scratch, erase partitions on hard disk and make a clean installation, not an upgrade.
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