I accidentally permanently deleted some important files and can’t find them in the Recycle Bin. Is there a reliable way to recover these deleted files without overwriting or damaging the data?
The hidden risk is that installing recovery software on the same drive can overwrite the deleted files you are trying to recover. Stop downloading, copying, or saving anything to that drive. If the files were on your Windows system drive, shut the computer down until you have a recovery plan.
First check places that do not require scanning the disk: OneDrive or another cloud service’s deleted-files area, File History, Windows Backup, application autosave folders, and any external backups. “Permanently deleted” usually means Windows removed the file-system reference, not necessarily that the actual data disappeared immediately.
For a DIY attempt, connect the affected drive to another computer or boot from a separate recovery drive. Install the recovery program somewhere else, scan the affected disk, and save anything recovered to a different physical drive. Disk Drill data recovery software is an option for this, but preview the files before paying or restoring. A filename appearing in the scan does not guarantee the file contents are intact.
Recovery chances are generally better on a hard drive that has seen little activity. SSDs are much less predictable because TRIM may clear deleted data before recovery software can reach it. If the files are irreplaceable, especially from a failing or damaged drive, skip repeated DIY scans and contact a professional recovery service. No recovery method is guaranteed, and continued use is usually what causes the most avoidable damage.
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Do not run CHKDSK, “repair,” or defragment the affected drive, since those operations can change filesystem data and make recovery worse. Before scanning with Disk Drill or anything similar, create a sector-by-sector image and scan that copy instead of repeatedly stressing the original drive.
Stop using the drive immediately, especially if it’s an SSD, since TRIM may make recovery impossible. Scan an image as @yara suggested, and save anything Disk Drill finds to a different physical drive.
Honest expectation: recovered files often come back as corrupted junk or with garbage filenames, so don’t assume a full scan list means everything is saved. Imaging first like @techtiger said is the right call, but preview each file before you trust it, since the ones you care about most are usually the ones that come back broken.