The drivers on the new HDD are newer. I tried finding and installing older versions that matched the old HDD, but that didn't help. I also tried uninstalling all Intel drivers and running the "Intel(R) WiDi Update Tool". It downloaded and installed the graphics/wireless/WiDi drivers, but that didn't work either. I'll try manually installing them in the order you suggested tonight (graphics, wireless, WiDi).
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