Try replacing the size 2032 CMOS battery.  The T5810 was introduced in 2014 and the battery has likely not been replaced for some time.  Not only do bad batteries cause unusual problems, I had a very similar problem with my 3620 until I replaced the battery.

If by chance the issue persists, we'll go from there.

Smart move getting Windows from the Microsoft site.

Hi Brad,

Thanks for replying to my query. You are suggesting to replace the CMOS battery but the person whom I bought it from was running it flawlessly and I checked the computer completely just two days ago and everything was fine. But I’ll still try to check the battery. Don’t you think the issue might be with the SSD ? 

Because after running it for 10 minutes when it crashes, it automatically restarts itself and show the error “Alert, No bootable device found” . But when I shut it down completely and then start it, it performs a clean boot. 

My problem is solved now. I was right about faulty SSD. BTW thanks for the response.

Glad you got it working.  :)  Not too often the SSD is faulty.

Battery is still often the 1st thing to check as low batteries affects BIOS.