:wave: Hello & Welcome to TechSpot :wave:
To help you, we're going to need a bit more information...
What Operating System (OS) are you using, what soundcard is it, and what (version/package of the) driver are you trying to install?
And do the OS list any drivers currently in use by your soundcard?
Without that info it'll be very hard for us to know what could be wrong...
As for Internet Explorer, when do you get the "invalid syntax error" message? Is it only on certain pages, and if so which?