Come risolvere il problema dell'unità USB non riconosciuta in Windows 10

26.12.2025 Vasilii

Quando un USB drive not recognized Windows 10 problem appears, the first concern is usually your files. Windows may fail to show a USB drive in File Explorer even though Gestione del disco or Device Manager can still detect it. However, the correct fix depends on what Windows can see. A missing drive letter needs a different solution from a RAW partition, an unallocated USB, or a device that shows “No Media.”

This guide explains how to fix a USB drive not recognized Windows 10 issue without making data loss worse. You will learn when to check hardware, drivers, power settings, CHKDSK, or recover files first. If Windows still detects the USB but your files are inaccessible, Magic Data Recovery può fornire un pratico Recupero dati USB opzione.

USB Drive Not Recognized Windows 10: Identify the Problem First

Before trying random fixes, check where the USB appears.

Quello che vedi	Probabile causa	Il passo successivo migliore
Missing from File Explorer but visible in Disk Management	Lettera di unità mancante	Assegnare una lettera di unità
Mostra RAW	Corruzione del file system	Recuperare prima i file
Shows Unallocated	Partizione persa o danneggiata	Recover data before creating a volume
Appears only in Device Manager	Driver/controller issue	Reinstall the device
Visualizza “Nessun file multimediale” o 0 byte	Hardware-level failure	Stop DIY repair
Scomparso ovunque	Port, connection, or physical failure	Test another port and PC

A USB drive not recognized Windows 10 error is a symptom, not one failure. Therefore, match the fix to the device condition.

Why Is My USB Drive Not Recognized in Windows 10?

Common causes include a faulty port, missing drive letter, corrupted driver, USB power-saving settings, file system corruption, a lost partition, or failing flash hardware.

For example, a USB may disappear from File Explorer after unsafe removal while Disk Management still shows it as RAW. The files may still exist, but Windows can no longer read the file system. Therefore, protect important data before destructive fixes.

Before You Fix a USB Drive Not Recognized Windows 10 Issue

Use a recovery-first workflow: stop writing new data, check Disk Management, and recover important files before formatting RAW or non allocato space. Save recovered files to another physical drive.

Also, avoid repeated CHKDSK attempts on an unstable USB. Do not create a new volume over unallocated space if you need the old files. If the device shows 0 bytes, “No Media,” or constant disconnects, stop DIY repair.

In short, follow one rule whenever important files are involved: prima il recupero, poi la riparazione.

Fix 1: Check the USB Port and Another Computer

First, start with the simplest possibility.

Disconnect the USB drive.
Connect it to another USB port.
Avoid USB hubs during testing.
If possible, try another Windows PC.

If the USB works elsewhere, the original PC likely has a port, driver, or power issue. However, if it fails on several computers, continue with Disk Management.

Fix 2: Check the USB in Disk Management

Next, open Disk Management. It is one of the best tools for diagnosing a USB drive not recognized Windows 10 issue because it can show devices that File Explorer hides.

Stampa Windows + X.
Selezionare Gestione del disco.
Find the USB by capacity.
Check whether it appears as Healthy, RAW, Unallocated, or No Media.

If the partition is healthy but lacks a drive letter, continue to Fix 3. If it shows RAW or Unallocated, recover files first. Meanwhile, if it shows No Media, skip to the hardware section.

Fix 3: Assign a New Drive Letter

A missing or conflicting drive letter can make a healthy USB disappear from File Explorer.

Aperto Gestione del disco.
Right-click the USB partition.
Scegliere Modifica della lettera dell'unità e dei percorsi.
Cliccare Aggiungi o Cambiamento.
Select an unused letter and click OK.

Then reopen File Explorer. If the drive appears, you solved the USB drive not recognized Windows 10 problem without changing its file system.

This method is especially useful when Disk Management shows a normal NTFS, FAT32, or exFAT partition but File Explorer does not list the device.

Fix 4: Update or Reinstall the USB Driver

Sometimes Windows detects the hardware incorrectly because the USB driver or stored device configuration has become corrupted.

First, open Gestione dispositivi, expand Unità disco o Controllori Universal Serial Bus, right-click the affected device, and choose Aggiornamento del driver.

If that fails, choose Disinstallare il dispositivo, disconnect the USB, restart Windows, and reconnect it. Windows should detect the device again with a fresh configuration.

È importante, Aggiornamento del driver e Disinstallare il dispositivo do different things. Therefore, reinstalling the device can help even when Windows reports that the best driver is already installed.

Fix 5: Disable USB Power Saving

Power management can cause a USB to disconnect or fail to wake.

In Device Manager > Universal Serial Bus controllers, open Hub di radice USB o Generic USB Hub properties and clear Allow the computer to turn off this device to save power.

Next, disable Sospensione selettiva USB under:

Control Panel > Power Options > Change advanced power settings > USB settings

Afterward, reconnect the drive and check whether the USB drive not recognized Windows 10 issue is resolved.

This solution is particularly useful when a USB works after startup but disappears after the PC wakes from sleep.

Fix 6: Scan for Hardware Changes

A temporary driver error may only require Windows to refresh connected hardware.

Aperto Gestione dispositivi.
Cliccare Azione.
Selezionare Verifica la presenza di modifiche all'hardware.
Wait for the device list to refresh.

After the scan, check File Explorer and Disk Management again.

If the USB returns, Windows likely lost the device connection temporarily rather than suffering from file system damage.

Fix 7: Recover Data Before Repairing a RAW or Unallocated USB

If Disk Management detects the USB but shows RAW, Unallocated, a missing partition, or a format prompt, recover files before repair.

Qui è dove Magic Data Recovery becomes useful. Instead of changing the damaged file system first, it scans a detectable storage device for recoverable files and lets you save them elsewhere.

Therefore, Magic Data Recovery fits situations where the main problem is inaccessible data rather than a simple Windows driver issue.

Gli scenari tipici includono:

The USB appears as RAW.
Windows asks you to format the USB.
The original partition becomes Unallocated.
Files disappear after deletion or file system corruption.
Windows detects the drive, but folders no longer open normally.

Fix 8: Run CHKDSK After Important Files Are Safe

CHKDSK can repair some file system errors, but use it only when Windows still assigns a drive letter, the USB remains stable, and important files are already backed up or recovered.

Aprire il Prompt dei comandi come amministratore ed eseguirlo:

chkdsk X: /f

Sostituire X: con la lettera di unità corretta.

Il /f option tells CHKDSK to repair detected file system errors. However, CHKDSK may change file system metadata while repairing the volume.

Therefore, avoid running it first on a RAW, severely corrupted, or unstable USB. If important files are still missing, recover them before using CHKDSK.

What If the USB Is Not Showing in Disk Management?

Se un USB drive not recognized Windows 10 device does not appear in Disk Management, check Device Manager next.

If Device Manager detects it, reinstall the device, scan for hardware changes, and test another USB port.

However, if neither Disk Management nor Device Manager can see the USB on several computers, the failure may be physical. At that point, recovery software cannot scan storage that Windows cannot access.

Therefore, repeated formatting tools, CHKDSK commands, or driver changes are unlikely to help.

Tips to Prevent USB Recognition Problems

Utilizzo Rimozione sicura dell'hardware before disconnecting a drive. In addition, avoid unplugging the USB during file transfers and keep another backup of important files.

You should also replace USB drives that frequently disconnect or report errors. Although these habits cannot prevent every USB drive not recognized Windows 10 error, they can reduce avoidable file system damage.

Conclusione

A USB drive not recognized Windows 10 problem should be diagnosed before repair. First, check another port and computer. Next, use Disk Management to identify whether the USB is healthy, RAW, unallocated, or showing No Media. Drive-letter, driver, and power fixes can solve many logical problems.

However, if the USB shows RAW, Unallocated, or a format prompt, recover important data before CHKDSK, formatting, or partition creation.

Magic Data Recovery is recommended in this situation because it addresses the real priority: retrieving files before repair changes the storage structure. It is not a solution for physically dead flash memory. Instead, it is a practical Recupero di unità USB option when Windows still detects the device but the files have become inaccessible.

If you are looking for a more efficient recovery solution before repairing the USB, try Magic Data Recovery.

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Unità USB non riconosciuta Windows 10 - Domande frequenti

Why is my USB drive not recognized in Windows 10?

A USB drive not recognized Windows 10 issue can come from a faulty port, missing drive letter, corrupted driver, file system damage, lost partition, or hardware failure. First, check Disk Management and Device Manager. If Windows still detects the USB there, the problem is often logical or driver-related.

How do I fix a USB device not recognized error in Windows 10?

Reconnect the USB, test another port, and try another computer. Then check Disk Management. If necessary, assign a drive letter, reinstall the driver, disable USB power saving, and scan for hardware changes. Recover important data before formatting a RAW or unallocated drive.

Perché la mia USB appare in Gestione disco ma non in Esplora file?

The most common reason is a missing drive letter. In Disk Management, right-click the partition and choose Change Drive Letter and Paths. However, if the USB shows RAW or Unallocated, do not format or create a new volume before recovering important files.

What should I do if my USB shows RAW in Windows 10?

A RAW USB means Windows cannot recognize the current file system. Recover important files first. Afterward, format the USB with NTFS or exFAT and test it again. If the device disconnects repeatedly, stop using it and consider professional hardware diagnostics.

Why is my USB showing No Media or 0 bytes?

“No Media” or 0-byte capacity often points to a controller or flash-memory problem rather than a simple file system error. Try another port and computer first. If the same status remains, software recovery may not work because Windows cannot access the actual storage media.

Can CHKDSK fix an unrecognized USB drive?

CHKDSK can repair some file system errors when Windows still assigns the USB a drive letter and the device remains stable. However, it can modify file system metadata. Therefore, recover or back up important files first, especially if the USB is RAW or severely corrupted.

Can I recover files from a USB drive that Windows 10 does not recognize?

Yes, if Windows still detects the USB and can access the storage media. Recovery software may scan RAW, inaccessible, or lost partitions. However, if the drive shows No Media, 0 bytes, or is not detected on any computer, professional hardware recovery may be necessary.

Come riparare un'unità flash non rilevata?

Iniziare con la reinstallazione dei driver e con Gestione disco. Se l'unità appare ma è inaccessibile, recuperare i dati prima di formattarla.

Vasilii

Vasilii è uno specialista del recupero dati con circa 10 anni di esperienza pratica nel settore. Nel corso della sua carriera, ha risolto con successo migliaia di casi complessi riguardanti file cancellati, unità formattate, partizioni perse e file system RAW. La sua esperienza copre sia i metodi di recupero manuale utilizzando strumenti professionali come gli editor esadecimali, sia le soluzioni automatiche avanzate con i software di recupero. La missione di Vasilii è quella di rendere accessibile la conoscenza del recupero dati affidabile sia ai professionisti IT che agli utenti di tutti i giorni, aiutandoli a salvaguardare i loro preziosi beni digitali.