Remove searchmarquis

In that case please restart your Mac in "Safe Mode" first, otherwise the "Search Marquis" redirect is going to prevent you from doing even that.

Then, you will be able to click on that link and have it load. Print it if necessary. It's only five pages long, and includes screenshots that may be helpful.

This is where I would prefer to link Apple's instructions for starting your Mac in "Safe Mode": How to use safe mode on your Mac - Apple Support, but since that isn't likely to work either the following describes the applicable steps. None of the links in it will work either, so if you need the additional explanation they would otherwise provide (e.g. you don't know what kind of Mac you are using) then you will need to return to this Discussion and ask.

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How to use safe mode on your Mac

Safe mode can help you to determine whether an issue is caused by software that loads as your Mac starts up.

Safe mode prevents your Mac from loading certain software as it starts up, including login items, system extensions not required by macOS, and fonts not installed by macOS. It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. And it deletes some system caches, including font caches and the kernel cache, which are automatically created again as needed.

Safe mode is particularly useful when you're trying to resolve an issue that doesn't seem to be associated with using any particular app. As always, keeping your software up to date is the first step toward resolving any software issue.

How to use safe mode

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

1. Shut down your Mac.
2. Turn on your Mac and continue to press and hold the power button until you see the startup options window.
3. Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
4. Log in to your Mac. You might be asked to log in again.

Intel processor

1. Turn on or restart your Mac, then immediately press and hold the Shift key as your Mac starts up.
2. Release the key when you see the login window, then log in to your Mac. 
3. You might be asked to log in again. On either the first or second login window, you should see ”Safe Boot” in the upper-right corner of the window.

Please read Removing "Search Marquis" / "Search Baron" / etc on your own - Apple Community. 

Reply to this Discussion and include the three screenshots according to those instructions.

Click here and run the tool. You may need to restart with the Shift key held down.

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I clicked on the above link on Removing Search Marquis, and the Mac keeps giving me a message the site is risky and could compromise my security. So, not helpful.

Will this work on MacBook Pro?

Yes.

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