duplicate of [/questions/1146906] as it has a image Hi, my name is Ryan, and I need help. several days ago, my lil brother used this computer for browsing and I don't know he downloaded what and from where. suddenly after he left my house, I got my firefox homepage changed to "9o0gle.com", some pop-ups ads and some unusual program installed to this computer. I uninstall all of them. I knew it was malware, or adware or spyware or anything else. so I decided to scan the whole computer at once. I found at least 445 malware and other viruses and all of those removed from my computer, but still "9o0gle.com" wont disappear. I tried to look at the homepage, but nothing written in it. I tried to look after the shortcut, and delete "9o0gle.com" in the "Target" bar with this text ("C:\Program Files (x86)\Mozilla Firefox\firefox.exe"), I removed everything after that address but still got "9o0gle.com" after two or three times I used. I tried to backup my bookmarks and reinstall the firefox, removing all the firefox data from my computer but still have the same problem until I write this message to firefox support. indeed, I tried everything I found on the internet to remove this annoying "index" bar, also removing several unusual script of ip addresses in "hosts" file, deleting some suspicious registry strings, etc. would you please help me this time? PS. I also have the screen capt attached to this message.