HARD DRIVE OPTIMIZED DST CHECK: SOFTWARE ERROR

[Riiik]

One day my laptop start lacking and getting slow and I can't play any video properly in my pc so I ran HP system extensive test it shows Hard drive smart check: Not Available

Hard drive short dst check: Warning

Hard drive optimised dst check: Software Error

Hard drive long dst check : Warning

Now what should I do 

My laptop model is HP Notebook 15g-0006TX

[TheOldMan]

That warning is telling you the hard disk is failing.  The slow sluggish performance is telling you that also.  The drive needs to be replaced ASAP.

According to the spec page it has a 1 TB 5400 rpm SATA.  You can replace with a 1TB 2.5" drive or a SSD made to replace a 2.5" drive.  The hardest part is getting into the laptop to replace the drive.

Here is the manual

http://h10032.www1.hp.com/ctg/Manual/c06691790.pdf

Hard drive replacement procedure starts on page 45.  That manual also mentions a M.2 SSD slot on the pages following the hard drive replacement.  While the cover is open, it might be an adventure to investigate that prospect.

If that is present and you wish to install the M.2 drive, much faster response than even the SSD replacement for the old hard drive.