this started happening, and i tried to download malwarebytes, but any browser i chose to download malwarebyte freezes on searches wich includes keywords such as, malware, remove, spyware etc.... so i tried disassembling the letters, it worked up to only when i open the link to download malwarebyte, and than my browser freeze,, so, i used microsoft safety scanner ( https/docs.microsoft.com/en-us/windows/security/threat-protection/intelligence/safety-scanner-download ) and made a full scan and removed all the virus,, (btw these are virus which windows defender didnt detect untill i ran a saftey scan), which solved the freezing on specific search problem and various other problems as well, however it did not solved my main problem, which is my main browser randomly opening into spam web pages,,, need serious help rn