Not only do you need the driver but some app to enable the WiFi. Also, there may be another driver to install before the WiFi. PLEASE DETAIL your install plan. I can't do this for your laptop but there is some usual steps and I may see what you left out like the motherboard chipset package or the app to turn things on.
Why 7? With Classic Shell I'm just fine with 8.x.
Bob
I have purchased the above laptop and formatted Windows 8.1 to install Windows 7. Everything is fine except the wireless drivers won't install. I've downloaded the official drivers from the Toshiba website. But I'm at a loose end.
Any ideas?

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