How to Check if Your Hard Drive is Failing in Windows

The Silent Threat of Data Loss

There are very few technology disasters more devastating than a failed hard drive. Whether you are using an older mechanical Hard Disk Drive (HDD) or a lightning-fast Solid State Drive (SSD), storage devices do not last forever. Eventually, the mechanical arms will seize, or the flash memory cells will degrade to the point of failure.

The problem is that hard drives rarely warn you before they die. Your computer might run perfectly fine on Monday, but on Tuesday, it completely refuses to boot, taking all your family photos, financial documents, and work files down with it.

Fortunately, almost all modern storage drives have a built-in self-monitoring system called S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology). This system constantly monitors the physical health of the drive. By checking your drive’s SMART status in Windows, you can spot the early warning signs of hardware failure and back up your data before it is too late.

Method 1: The Quick Check Using Command Prompt

If you want a fast, immediate answer without installing any third-party software, Windows has a built-in tool that can read your drive’s SMART status. It will only give you a basic “Pass” or “Fail” grade, but this is often all you need.

1. Click the Start button on your Windows taskbar.
2. Type cmd into the search bar.
3. In the search results, you will see Command Prompt. Right-click on it and select Run as administrator.
4. A black text window will appear. Type the following command exactly as written and press Enter:

   wmic diskdrive get status

How to Read the Output:

• If the command returns the word OK (for each drive installed in your system), your hard drive believes it is perfectly healthy.
• If the command returns Pred Fail (Predictive Failure), Error, or Bad, your drive has detected critical hardware errors. It is actively dying. Stop what you are doing immediately and back up your important files.

Method 2: The Detailed Check Using CrystalDiskInfo

The problem with the built-in Windows command is that a drive will only report a “Fail” status when it is on the absolute brink of death. If you want to see the early warning signs—like a rising temperature, reallocated sectors, or read errors—you need a dedicated tool to translate the raw SMART data into a human-readable dashboard.

The industry standard for this is a free, open-source application called CrystalDiskInfo.

1. Open your web browser and navigate to the official CrystalMark website to download CrystalDiskInfo. (Make sure you download the standard version, not the anime-themed “Shizuku” edition, unless you prefer that aesthetic).
2. Install the software and open the application.
3. CrystalDiskInfo will instantly read the hardware sensors on your drive and display a large, colour-coded Health Status box in the top-left corner.

Understanding the Health Grades:

• Blue (Good): Your drive is healthy. You have nothing to worry about.
• Yellow (Caution): The drive has started to degrade. It has detected physical errors (like Bad Sectors) and is trying to repair them. The drive might last another two years, or it might die tomorrow. You should replace the drive soon and ensure your backups are current.
• Red (Bad): The drive has experienced critical physical failure. It is entirely unsafe to store data on this drive. Replace it immediately.

What to Do if Your Drive is Failing

If you see a “Caution” or “Bad” warning, do not panic, but do not ignore it either.

1. Do not run disk repair tools. Running intense software like “CHKDSK” or a disk defragmenter will put the dying drive under massive physical stress, which might push it over the edge and kill it instantly.
2. Back up your most important files first. Connect an external USB drive or open a cloud storage service like Google Drive. Do not try to clone the entire drive yet. First, manually copy your irreplaceable files (photos, tax documents, passwords).
3. Clone the drive (optional). Once the most critical files are safe, you can attempt to use software like Macrium Reflect to clone the dying drive onto a brand-new replacement SSD.

Remember: S.M.A.R.T. monitoring is an excellent tool, but it is not infallible. A sudden power surge or a physical drop can destroy a drive instantly without triggering a SMART warning. Because of this, you must always maintain a regular backup routine, regardless of how healthy your drive claims to be.