Hard Drive Not Showing Up? Step-by-Step Fixes for Windows
Whether it is an external USB drive or an internal hard drive, not showing up in Windows is a stressful problem. Here is how to diagnose and fix it — and when to call a data recovery specialist.
Important — read before formatting
If your drive shows as RAW, Unallocated or Unknown in Disk Management, do NOT format it. Formatting will overwrite the data. Call a data recovery specialist first — in most cases the data is still recoverable from an unformatted partition.
First: is this an external or internal drive?
The fixes are different depending on whether the hard drive is an external USB drive (portable hard drive, USB SSD, external enclosure) or an internal drive inside the laptop or PC. Work through the relevant section below.
External hard drive not showing up — fixes
Try a different USB cable and port
USB cables fail more often than drives. Try a different cable (especially if yours is old or has been bent repeatedly) and plug into a different USB port on your computer. Avoid USB hubs — plug directly into the laptop or PC. Some external drives also need more power than a single USB port provides — if your enclosure came with a Y-cable (two USB connectors), use both.
Check Disk Management
The drive may be detected by Windows but not assigned a drive letter. Press Windows + X → Disk Management. Look for your drive in the lower panel. If it appears with no letter: right-click → Change Drive Letter and Paths → Add → assign a letter. If it shows as Unallocated or RAW — stop here and read the warning section below before doing anything.
Update the USB driver
Open Device Manager → expand Disk drives → look for your drive (or any device with a yellow warning icon). Right-click → Update driver. Also expand Universal Serial Bus controllers and update any USB drivers with warnings. Restart after updating.
Try the drive on a different computer
This isolates whether the problem is the drive or your computer's USB system. If the drive appears on another computer, the issue is with your USB ports or drivers. If it still does not appear, the problem is the drive itself.
Internal hard drive not showing up — fixes
Check in Disk Management
Press Windows + X → Disk Management. If your internal drive appears here but not in File Explorer, it may need a drive letter or may have an issue with its partition table. Right-click → Change Drive Letter and Paths → Add a letter if none is assigned.
Check in BIOS/UEFI
Restart and press F2, F10 or Delete to enter BIOS (varies by brand). Look for a storage or drives menu. If the drive does not appear in BIOS, it is not being detected at the hardware level — this indicates either a failed SATA connection, a failed drive, or a motherboard issue. This requires a technician.
Update storage drivers
In Device Manager → expand Disk drives → right-click your drive → Update driver. Also check IDE ATA/ATAPI controllers. Outdated Intel RST (Rapid Storage Technology) drivers are a common cause of detection issues on newer laptops.
Run CHKDSK
If the drive appears but has errors: open Command Prompt as administrator and run chkdsk D: /f /r (replace D: with your drive letter). This checks for and repairs file system errors. Allow it to complete — it may take an hour or more for large drives. Do NOT run CHKDSK on a RAW partition.
When the drive has actually failed
If none of the above fixes work, the drive may have physically failed. Signs of hardware failure include:
- Clicking or grinding noises when the drive spins up
- Drive spins but is not detected in BIOS
- Drive gets very hot
- Intermittent detection — appears and disappears randomly
- S.M.A.R.T. errors in Disk Management
If the drive is clicking or grinding — stop using it immediately. Every additional spin increases the risk of permanent, unrecoverable data loss. See our data recovery service or read our data recovery case study to understand what recovery involves.
TechFix Pro provides on-site data recovery across Western Sydney. We confirm your data is accessible before charging for recovery. No Data, No Fee.
Frequently asked questions
Why is my external hard drive not showing up?
The most common causes are a faulty USB cable or port, a drive that needs to be initialised in Disk Management, an outdated USB driver, or a drive that has failed. Start by trying a different USB cable and port before assuming the drive has failed.
My hard drive shows in Disk Management but not in File Explorer — why?
This usually means the drive has no drive letter assigned, or the partition is unformatted or RAW. In Disk Management, right-click the drive and select Change Drive Letter and Paths to assign a letter. If the partition shows as RAW or unallocated, do not format it — call a data recovery specialist first as formatting will overwrite your data.
Can I recover data from a hard drive that is not showing up?
Often yes. If the drive is detected in Disk Management but shows as RAW or unallocated, specialised recovery software can often recover the files. If the drive is physically damaged (clicking, grinding or not spinning), professional data recovery is required. TechFix Pro provides data recovery services across Western Sydney — we confirm data is present before charging.
Is it safe to keep using a hard drive that keeps disconnecting?
No. A drive that intermittently disconnects or disappears is showing early signs of failure. Back up your data immediately and replace the drive. Using a failing drive risks complete, unrecoverable data loss.
Related services
Drive still not showing up? We can help.
On-site data recovery and hard drive repair across Western Sydney. No Fix, No Fee.