Click on below button to start Windows 10 Download ISO 32/64 Bit Free of cost. This is Technical Preview released by Microsoft yet. You can easily download and install it via USB or DVD.
Microsoft has released the technical preview code for Windows 10 and use the below mentioned code to activate OS, which is as follow
Technical Preview: NKJFK-GPHP7-G8C3J-P6JXR-HQRJRTechnical Preview for Consumer: 334NH-RXG76-64THK-C7CKG-D3VPT
Technical Preview for Enterprise: PBHCJ-Q2NYD-2PX34-T2TD6-233PK
Windows 10 Home: KTNPV-KTRK4-3RRR8-39X6W-W44T3
Windows 10 Pro: 8N67H-M3CY9-QT7C4-2TR7M-TXYCV
Windows 10 Enterprise: CKFK9-QNGF2-D34FM-99QX2-8XC4K