Submit

The $$ checks that all devices such as RAM and disk drives are present and functioning.

A$.$ basic input$/$output test $($BIOT$)$

B$.$ power$-$on self$-$test $($POST$)$

C$.$ central processing unit $($CPU$)$

D$.$ master boot record $($MBR$)$

E$.$ boot$-$only self$-$test $($BOST$)$