Speed Up File Copy in Windows 7

1- Disable Auto-tuning
Command: netsh interface tcp set global autotuninglevel=disabled

2- Remove RDC
Control Panels > Programs and Features > Turn Windows features on or off > Unchecked Remote Differential Compression

3- Remove IPv6
Control Panel > Network and Sharing Center > Change adaptor settings > Right click on your enabled network >  Properties > Uncheked Internet Protocol Version 6 (TCP/IPv6)

4- Clear DNS Cache
Command: ipconfig /flushdns