Take overclock off, reset BIOS to basic.
Make sure you have The install style set, AHCI on?
Use SATA1 Use a usb on the closest bank, or make sure your DVD is set on a different SATA bank to the install drive.
Just seems absurd amount of time.
I recall my 920 has issues in win 7 with 'expanding memory' when first installing, due to coming from DVD, sat for ages doing nout, then installed swiftly, I don't ever recall 10 taking this long.