Use a free utility like HashCheck or Windows PowerShell ( Get-FileHash ) to ensure your downloaded file matches the source. How to Accelerate Slow Driver Downloads
The you are trying to download the driver for (e.g., Realtek Wi-Fi, NVIDIA Graphics). 25 Minutes 225 Megabytes Driver Download Windows 7
"The publisher could not be verified. Are you sure you want to run this software?" Use a free utility like HashCheck or Windows
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