Recently my all desktops and laptops were hijacked by some spyware that open promotional websites when I click on any link on my browsers.
The exact culprit was – onmarshtompor.com – which is a never-ending gateway to a hell lot of promo websites.

ONLY Malwarebytes come to my rescue!! I just scanned my desktop with the FREE version and it found several issues in my registry and files, especially downloaded from untrusted sources and then it quarantined all of them.