Hi Irfan,
Hardware reserved memory is reserved for the use by the BIOS and some drivers for other peripherals.
I would suggest you to run Memory Diagnostic Tool and check if it helps.
a) Press**“Windows Logo” and “W”** keys on the keyboard to open the “Settings” search bar.
b) Type “Diagnose your computer’s memory problem” in the search bar and press “Enter” key on the keyboard.
c) Follow the on-screen instructions to run it.
Hope this information helps. Reply to the post with updated status of the issue to assist you further.