Warning: Spoiler! (Click to show)
Click Start -> Control Panel -> Programs (or Add/Remove Programs) -> Uninstall a Program.
Here, look for Scorpion Saver from AdPeak inc. and similar entries and select 'Uninstall/Change'.
Click OK to save the changes.
TIP: You should also uninstall these programs because they were noticed taking a role in Scorpion Saver's distribution: LyricsSay-1, LyricXeeker, HD-Plus, Browse2Save, WebCake 3.00, DownloadTerms 1.0, LyricsBuddy-1, SuperLyrics-1, ElectroLyrics-1, a2zLyrics-1, SimpleLyrics,1ClickDownload, Superfish, Yontoo and FBPhotoZoom.
After that, fix each of your browsers with a help of these steps:
Open Internet Explorer, go ‘Tools‘ -> ”Manage Add-ons’ -> ‘Toolbars and Extensions’ and uninstall Scorpion Saver, Softonic toolbar for IE and Chrome LyricsSay-1, LyricXeeker, HD-Plus, GetLyrics, LyricsMonkey-1, Browse2Save, TubeSing-3, WebCake and any other unknown extension.
Click ''Tools' -> 'Manage addons' -> ‘Search Providers’ and choose the search engine you used before.
Open Mozilla Firefox, go ‘Tools’ -> ‘Add-ons’ -> ‘Extensions’; find Scorpion Saver, LyricsSay-1, LyricXeeker, HD-Plus, GetLyrics, LyricsMonkey-1, Browse2Save, TubeSing-3, WebCake and other entries that are unknown for you, and click ‘Uninstall’.
Go ‘Tools’ -> ‘Options’ and reset the startup homepage to google.com, yahoo.com or similar search page.
Click the Chrome menu button, select 'Tools' -> 'Extensions', find Scorpion Saver, Softonic toolbar for IE and Chrome, LyricsSay-1, LyricXeeker, HD-Plus, GetLyrics, LyricsMonkey-1, Browse2Save, TubeSing-3, WebCake and other unknown extensions, and remove them by clicking Recycle bin.
Now click 'Settings' -> 'Manage search engines' and change your default search engine
If that doesn't work, I would get Revo uninstaller and use it to get rid of that spyware.