Recently I’ve been working on quite a few Acer desktop PCs with hard drive failures. The specific model, AM5641, has a quirk when it comes to the restore media working, in that unless the hard drive is partitioned as an NTFS volume, the restore process gives a ‘type mismatch’ error right after making a language selection.
To complete the restore process, I’ve been using Partition Commander, which is a great tool when it comes to quickly formatting and converting a volume to NTFS.