A “no hard drive detected” error on your Dell stops you before Windows even starts. The fix depends on where the drive disappears: from the BIOS, during startup, or inside Windows Setup. Start with the quick checks, then follow the section that matches what your Dell finds.
Disconnect accessories and restart
Disconnect USB storage, memory cards, docks, and other peripherals, leaving only your keyboard and mouse connected.
Restart your Dell.
If the error disappears, reconnect accessories one at a time to identify which device brings it back.
If the error remains, shut down the computer. The following power-drain reset applies to desktops and laptops with removable batteries.
Disconnect AC power.
Remove the laptop battery if it is removable.
Hold the Power button for 15–20 seconds.
Reconnect the removable battery.
Reconnect AC power.
Start the computer again.
Tip: This reset does not erase files; for a laptop with a nonremovable battery, follow Dell’s RTC-reset instructions only if your model supports that procedure.
Find out whether your Dell detects the drive
Check the BIOS, then run Dell’s built-in diagnostics, no Windows login needed.
- 1.Start the computer and tap F2 to enter the BIOS.
- 2.Open General > System Information, or Storage on newer BIOS interfaces, and check whether the internal drive is listed.
- 3.Restart and tap F12 at the Dell logo, then select Diagnostics.
- 4.For a targeted storage test, press Esc, select Advanced test, clear Select all, and select the storage test.
- 5.Enable Thorough mode and select RUN TEST. Available tests depend on the installed hardware.
- 6.Record any error code, validation code, and your Service Tag for Dell support.
Check boot settings if the drive is detected
If the BIOS lists your drive but Windows will not start, check the boot settings next. The computer detects the storage; now check whether it is set to boot from it.
Enter the BIOS with F2.
Open General > Boot Sequence, or Boot Configuration > Boot Sequence on interfaces with that layout.
Move the internal boot entry to the highest priority.
Save your changes.
Restart the computer.
For an accidental boot-mode change on a UEFI-only Dell with an existing UEFI Windows installation, return to General > Boot Sequence.
Select UEFI.
Apply the change and exit the BIOS.
An installation made using an unsupported Legacy configuration requires reinstallation with UEFI enabled. Ignore older advice to switch a UEFI-only Dell to Legacy boot: that setting is a documented cause of boot errors on those models.
Preserve the storage-controller mode required by your Windows installation. Dell documents System Configuration > SATA Operation > AHCI for applicable non-RAID troubleshooting, but changing the mode without matching the installation risks leaving Windows unable to boot.
Reseat a drive that is missing from BIOS
If the BIOS does not list the drive, check its connection. Use the service manual for your exact Dell model, identified by its Service Tag; SATA drives and M.2 modules have different procedures.
Shut down the computer.
Disconnect power and the battery as directed by the service manual.
Reconnect the SATA power and data cables, or reseat the M.2 module, following the manual’s storage procedure.
On a desktop with a SATA drive, try another SATA port.
Reassemble the computer.
Check drive detection again using F2 at startup.
Run diagnostics again through F12 > Diagnostics.
Also check for a disabled storage port. On the OptiPlex 7090 Tower, enter the BIOS with F2.
Open Storage > Storage Interface > Port Enablement.
Enable the port containing the drive.
Save the change. For other models, use their own BIOS manual; this menu path is specific to the OptiPlex 7090 Tower.
If the drive remains undetected, follow the hardware-service steps at the end. Windows repair tools do not fix a drive that the BIOS cannot detect.
Update firmware for intermittent detection
If your Dell boots into Windows but occasionally loses the drive, install applicable BIOS and driver updates to address detection and compatibility faults. Keep AC power connected during the BIOS update. Have your BitLocker recovery key available before starting.
On a BitLocker-protected computer, search Windows for Manage BitLocker. Select Suspend protection before updating the BIOS.
Open SupportAssist > Home > Update software > Start. Install the applicable updates. Restart the computer when prompted.
Resume BitLocker protection after the update. If Windows requests a recovery key, retrieve the matching key from your Microsoft account’s recovery-key page or your organization’s administrator. Enter that key to restore access.
Repair Windows when the drive passes hardware checks
Use software repair when the drive is detected and hardware diagnostics pass, but Windows will not start. A passing quick test does not rule out an intermittent drive fault, so run the thorough storage test first.
Back up accessible files before attempting recovery.
On supported Dell models, press F12 at startup.
Select SupportAssist OS Recovery.
Select Repair on Repair software.
Choose START REPAIR.
Restart the computer after the repair finishes.
If Dell’s recovery environment is unavailable, open Troubleshoot > Advanced options > Startup Repair in the Windows Recovery Environment.
Select Restart.
Enter your BitLocker recovery key if requested.
Reserve reinstallation for healthy, detected storage after repair fails. Both SupportAssist reset options erase the target installation, so finish your backup before proceeding.
To reinstall, return to SupportAssist OS Recovery through the F12 startup menu.
Choose Start Reset.
Select Reset to factory settings or Reset and update. Cloud recovery requires network access.
Select Next.
Complete the offered backup or transfer.
Acknowledge data deletion and follow the prompts to finish the reset.
Load the storage driver when Windows Setup finds no drive
For matching Intel RST/VMD configurations, including applicable Dell Intel 11th–14th-generation systems installing Windows 11, load the storage driver during installation.
- 1.On a working computer, identify the affected Dell on Dell Support, then open Drivers & Downloads > Storage and download its Intel Rapid Storage Technology driver.
- 2.Run the downloaded package and choose Extract to place the driver files on a USB drive.
- 3.Connect the USB drive to the affected Dell. In Windows Setup, select Load driver > Browse.
- 4.Select the extracted VMD folder or its f6vmdflpy-x64 subfolder, then select OK. Applicable 10th-generation-and-earlier packages use F6/f6flpy-x64.
- 5.Select Intel RST VMD Controller, then Next to load the driver and continue installation.
Arrange repair for a persistent hardware fault
If diagnostics report a storage fault or the drive stays missing after the connection checks, contact Dell with the error code, validation code, and Service Tag. Alternatively, scan the diagnostic result’s QR code to open the support route. Repair or replacement availability depends on your warranty and location.
Recover or back up needed data before replacing failed storage.
Choose a compatible replacement using your Dell’s Service Tag-specific service manual.
Follow that manual’s removal and installation procedure.
Reinstall the operating system.
Install the model-specific drivers.
If the replacement drive is still not detected, return to Dell support with the new diagnostic results for further hardware diagnosis.
Frequently Asked Questions
Should I initialize a drive that contains my files?
No. Initialization and formatting are for a genuinely new, empty disk, not for recovering an existing disk containing data. Do not use either operation to recover a missing drive with files you need.
What if the drive is missing only from File Explorer?
For a secondary or external drive, open Disk Management. Select Action > Rescan Disks. If the disk shows Offline, right-click its disk label and select Online. For a healthy data volume without a letter, right-click the volume and select Change Drive Letter and Paths > Add. Choose Assign the following drive letter, select an unused letter, and select OK. Leave EFI and recovery partitions unchanged.
Can I use Dell recovery media instead of loading an Intel storage driver manually?
Yes. Dell recovery images provide an alternative for supported models affected by retail installation media’s missing-RST-driver problem. Install Dell OS Recovery Tool on a working x64 or ARM64 Windows PC with internet access. Identify the affected Dell by Service Tag. Select a USB drive with at least 16 GB of storage, acknowledge that it will be erased, and choose Download. Once the media is ready, start the affected Dell with F12, select the USB drive, and follow the recovery prompts. Back up needed files before reinstalling Windows.
Why can’t I change the BIOS settings on my work Dell?
An administrator can lock BIOS changes. Ask your organization’s administrator to inspect storage enablement and boot settings. A locked setup screen does not mean the drive has failed.
