Hi,
The program itself is not a virus or trojan or even malware. The reason it is not uninstalling is because the Install.log or Install.dat file this program generated when you installed it has become corrupted.
If you go into your programs folder you ought to be able to manually uninstall it there.
I'll assume your root directory is C:
Thus, goto C:\Program Files\Full Speed Internet Booster + Performance Test
Open that Full speed folder.
Inside you will most likely see either an application file called Uninstall.exe, or Unwise.exe
Note!!! As .exe files are a common file extension you may not see .exe after those file names, but if you look in the "Type" column it will say its an Application so you can assume this is an .exe file.
You should also see the Executable file for the full speed program.
To manually uninstall it, left-click the full speed application file with mouse and HOLD button down, then drag mouse cursor and drop the file ontop of either Uninstall.exe or Unwise.exe and release the left mouse button.
This will begin the uninstall of the program.
Once done, simply delete the Full Speed Internet Booster folder if still present.
Regards,
Javalad