I operate w10 and keyboard stopped working. Purchased a new one after verifying old one was faulty.

New one has USB old one Ps/2.

Got adaptor USB to ps/2. No go. Tried into USB and worked intermittent and now off altogether.

Have tried several "remedies "to an avail.

Last one was via TASKSCHD but no "expand"keyboard section.

Any help would be appreciated as I am a bit of a novice.