Hard Drive Recovery
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I Have Recovered a File, But I Cannot Open it
Oct 23, 2026 • Filed to: Recover Files • Proven solutions
TL;DR:
Recovered files often fail to open because the original data was either corrupted by system activities or permanently fragmented across the hard drive prior to the recovery attempt.
● Microsoft Office documents like PowerPoint, Word, and Excel are highly vulnerable to irreversible damage caused by overwritten data, disk defragmentation, or malicious software.
● Large video files such as MPEG and MKV are nearly impossible to fully restore because their data is stored in separate drive locations, and the directory linking these fragments is permanently erased upon deletion.
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A: This is actually very common. Sometimes, when you recover a file using any data recovery software, there’s a slight chance you won’t be able to access it, and this is especially true for Microsoft Office files (think PowerPoint, Word, Excel). It also happens with large files like MPEG or MKV and most other video files. What causes the problem, though? Two main things:
Damaged Files1.Damaged Files
Once you delete a file, it’s very possible and probable the selected file could be damaged by another file. But more likely, the damage could stem from the file being overwritten by another file. The deleted file could also get damaged by disk defragmentation, an attack by malicious software like virus or malware or even the adverse activities of hackers (Microsoft Office files, in particular, are very vulnerable here).
Fragmented Files2.Fragmented Files
There are large files which are often saved in distinct, separate locations on your drive because they cannot share the same, immediate hard disk space with each other. Recovery of such files is pretty much impossible-or difficult, at best-because even though the file’s initial location can be pinpointed, the information on where the other fragments are located is often erased for good.
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