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Reason & Solution For Hard Disk SMART Command Failed Error

Yesterday night I encountered a strange error on my computer. I couldn't boot my computer properly and instead of OS window I was stuck in an error page, Hard Disk SMART Command Failed. Other than Tab key, no other keys were working. It was a confusing situation because whenever I reboot my PC, I was going back to the same error page like I was in a loop. I started counting the possible reasons for this particular warning and the major possibilities came into my mind were :
  1. Hard disk drive (HDD) failure
  2. BIOS / Motherboard issue
On the error page, I was getting an alert like press [Del] to enter BIOS. But Delete button was not working because it was not responding due to the error. So I decided to follow my way of troubleshooting and started with Hard Disk Drive. I opened the cabinet and disconnect power cable and Bus (cable which connects motherboard and peripheral devices) from the HDD. After reconnecting them, my computer started to work again and no more failure messages. I was wondering whether I fixed the error Hard Disk SMART Command Failed on my computer or it was just a workaround. So I decided to spend the time to research this issue.

Reasons for Hard Disk S.M.A.R.T Command Failed Error

The main reason for this failure message is HDD failure and when the SMART BIOS feature detects this issue we will see this failure message. SMART stands for Self-Monitoring, Analysis, and Reporting Technology for monitoring the Hard Disk Drive for any kind of malfunctioning. If S.M.A.R.T detects any problems with it,  it will return the failure message.

Solutions for Hard Disk SMART Command Failed Error Message

The permanent solution for this error message is to replace your hard disk with a new one. But there are some other workarounds for this error. They are:

  1. Disable S.M.A.R.T feature in BIOS

    It will avoid the chance of detecting the computer HDD failures and you will not get any more SMART error message. We know it is not a perfect solution for the long term.

  2. Disconnect the power and Bus to hard disk and reconnect

  3. Regular Hard Disk recovery methods

    It is recommended to perform any kind of HDD recovery steps like de-fragmentation for fixing the errors of your computer disk.
In my case, I just followed the second workaround by disconnecting both BUS and Power cable from HDD and reconnect. It looks a little dirty if you are not cleaning your PC frequently but it outsmarts other two solutions.

Related Articles

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  2. How to reset BIOS password

  3. Connecting two computers using a USB cable

  4. Check Frequency of RAM



Anonymous said…
Thanks it helped me
Bigyan Ghimire said…
me also facing this problem in my laptop... Thanks but the suggestions but i couldn't find any SMART option in BIOS setup.. Any one help me to locate this option plz.....
Sangardo said…
many thanks to you. I've got this problem yesterday. It happened after my HDD'd had sounded and made my computer interrupted,therefore, I had to cut off the power to my computer.
Anand said…
Hi Bigyan

Some BIOS doesn't have smart option.
Tom said…
Me getting S.M.A.R.T. Capable but Command Failed
Pri Slave:
Pri Master:
Pri Master Hard Disk: S.M.A.R.T. Command Failed

What should I do?
Anand said…
Disable S.M.A.R.T I am sure it is not very necessary.
Alex Kureekkattu said…
If anyone doesn't see S.M.A.R.T feature in BIOS, you might check in advanced settings.

Have you done the steps provided in this tutorial ?
Anonymous said…
Can I get S.M.A.R.T Command failed message in Linux Computer ? I am not a Windows fan
Alex said…
Yes, you may get if SMART feature in BIOS detect hard disk error. This error message has nothing to do with OS
Waheed Quraishi said…
Thanks, second option worked for me as well
Alex George said…

I am happy to hear, this post helped you.
Unknown said…
Well, that is troublesome...
My hard drive is not even half a year old and I had to buy it after my old one, which wasn't older than a year at the time, broke down. Does S.M.A.R.T. check for temperature as well? I have a habit of leaving the window opened overnight so in the morning it's freezing cold. I know it affects the CP, maybe the hard drive as well?
Alex George said…

It is widely considered as temperature below 25°C can damage HDD. However, the common reason for hard disk failure is the improper shutdown or sudden power off. Make sure you have shut down the computer after your use.
Unknown said…
Enter setup> select the sata port you're using for the hdd> SMART Monitoring
sharif wani said…
Shows windows and one beeps and again starts with settings shows start windows normally I enter again to windows and restarts
sharif wani said…
Disabled s.m.a.r.t but the same problem exists
Alex George said…

You may follow the instructions in this link: