Make sure you have latest BIOS update. If so, reset the CMOS: Clear CMOS - 3 Ways To Clear the CMOS - Reset BIOS
Set SATA controller to AHCI first to try install, then IDE mode if this fails.
Remove all but 2gb of RAM to try install.
Wipe the HD using Diskpart Clean All
command from the booted Win7 DVD: SSD / HDD : Optimize for Windows Reinstallation
After wiping HD, close Command Box and click Install Now, use Custom>Drive Options to create partition(s), format before installing to first OS partition - ignore the 100mb boot partition created by Win which places the Repair console on F8 Boot Tools.
If this fails, go back to Diskpart tutorial and use Step 2.2 to repartition and mark Active.
Unplug all other HD's and peripherals.