Annoying Chrome Pop Up on Switching On

[Esseven]

Recently, my Galaxy S7 has started opening up Chrome when I switch the phone on and Chrome then finds a succession of adverts and sales sites.  It even overrides what I am doing on the phone after a few moments of inactivity with more ads.

It looks like I have accidentally downloaded this or some malware has found its way in.

Any ideas as to how I can get rid of it?

I have the latest version of the OS on my phone.

[xSteveuk]

Download and run malwarebytes
Is excellent removing malware

[antikythera]

Do what Steve recommends, Chrome doesn't typically behave like that so you may well have a browser hijacker at minimum on your S7

[Esseven]

Thanks for the posts.  I've got Malwarebytes running now but it will take some time to run through.  I ran the onboard (McAfee) virus scan earlier but nothing found.  I'll post the results of the Malwarebytes when it's done.

[Esseven]

Hello again.  Malwarebytes found one app that identified as malware.  It was a barcode scanner!  I have deleted it but unfortunately, my Chrome issue is still there.

Any further suggestion would be welcome,

[Pugs1957 · Accepted solution]

Clearing your browser cache should work.

[xSteveuk]

Helpful link

https://support.google.com/chrome/answer/2765944/remove-unwanted-ads-pop-ups-and-malware-android

[Esseven]

Thanks for all the posts and links.  All very helpful.  It was the cache being cleared that cracked it in the end.

[Esseven]

.....carelessly, I clicked the wrong post (my own!) as the solution.  Can I correct this?