After installing several new drivers, my USB ports have stopped working

I have an HP Pavillion g6 running Windows 8, and in the last week or so, I've updated the following drivers using DriverMax:

Intel® HD Graphics 3000

HP TrueVision HD

2nd Generation Intel® Core Processor Family DRAM Controller - 0104

Intel® HM76 Express Chipset LPC Controller - 1E59

Intel® 7 Series/C216 Chipset Family USB Enhanced Host Controller - 1E2D

%1 USB 3.0 eXtensible Host Controller - %2 (Microsoft);(Intel®,0100)

Intel® 7 Series Chipset Family SATA AHCI Controller

Realtek PCIe FE Family Controller

Intel® Management Engine Interface

Synaptics SMBus Driver

Now, 2 of my USB ports are not working (my wireless mouse is still plugged in and functioning on the remaining USB port). I thought DriverMax was Microsoft-approved, and that the drivers would be the correct ones, but now I think one of them must have been the cause.

Any advice on how to fix the problem?

Thanks!

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