well, i do know this post is very old, but i want to say this as i had the same problem loong ago and it was a pain in my butt for 2 weeks even with a pretty advanced knowledge of computer security, so that everyone that reads this and has the same problem is able to solve it just as i did.
first of all, this is a browser hijacker and if you have it, then the most probable situation is that you have a backdoor, adware or a trojan installed on your pc, because this kind of problems dont show up or infect a pc alone (usually)
when i got this problem it was caused by a backdoor called snare.msi wich also installed a huge lot of random rogue antiviruses, some nasty programs and even videogames called "warframe" and "farm..." something. this happened like a year ago dont judge me, but you probably got another kind of backdoor installing stuff, you shouldnt think you have exactly the same problem as me.
second, you should look at your appdata temp, local and roaming folders for unusual activities (thats where the snare.msi file was for me) and also program files folder, then check official bleepingcomputer posts about how to remove it because some malware enables some payloads when you try to manually remove them, minion based ones for example. if that doesnt work or there arent any posts then you should try the following
i will only show general solutions that will possibly work on every pc and i will try not to break any of the bleepingcomputer rules
(please try to do all of this steps in safe mode with networking enabled)
third, the first thing you should do is install Adwcleaner, roguekiller, malwarebites antirootkit and a few free, well known antivirus (like malwarebites and avast. make sure to enable anti rootkit scan if you know how to) (always download them from the official sites and from a browser you know isnt infected or do that in safe mode. yeah totally do all of this in safe mode) (make sure to uninstall every one of them except the preferred one by you as when you have more than one antivirus installed they can enter in conflict with each other and make your pc run slow). then scan your pc with them all and delete any found threats, reboot your pc if the antivirus tell you to do so. this is because the protocols of every antivirus detect some viruses that the others dont and viceversa so if you only have one you could still have trails of the viruses wich will replicate and if you got a backdoor like me, well in fact you could literally have thousands of malware, and when i got this whole problem avast didnt detect absolutely any of them except with the boot scan.
the next step is to check (right click, properties) every browser shortcut you have and if it says other than the default (for example redirectting you to a "hippig" folder wich is an exact copy of chrome but hihacked instead of chrome. that exact thing happened to me), then delete those shortcuts and the suspicious folders, then create shortcuts to the legitimate browser (at this point the backdoor should be gone and you are just deleting possible trails of it). also if there is any desktop or start menu shortcut that you didnt create, for a program you didnt install, delete it inmediately and repeat this whole proccess if you accidentally opened one of them. those things often are able to replicate the whole problem and often they arent even games or are modified ones.
if after doing all of this the shorcuts get modified and/or created again, you notice some suspicious activity in your pc and think the problem may be back, try to completely wipe your hard disk, reinstall windows if necessary, dont just do a system recovery or revert it to a past status. also dont do any backups and if you need any programs then install them from zero from the official site as most files can be modified to carry malware in them. even png images. this is in case that you are completely sure the rest of the solutions didnt work because you may want to have your important files with you. i actually was able to recover my pc but you may have a worse problem than the one i had. dont get alarmed that is almost impossible and maybe you just have a browser hijacker alone, it is possibly alone if you started having this problems after installing a browser extension, clicked a weird ad or visiting a shady web page. some ads even redirect you to websites that hijack your pc in the background so please be intelligent and install an adblocker (it is highly recommended, almost mandatory for your own good if you use adfly shortened websites often or similiarr ones. dont let that bonus 5 secs of wait convince you you have some more billions of them. ads in that kind of websites are pretty darn invasive and often even harmful.)