I recently formatted my Acer Aspire 4730z and attempted to install Windows 7. I have tried more than 5 times with no avail. Currently, I am doing a clean install by booting it from the DVD. I have the SATA mode is set to IDE. When it restarts after the installation to complete the installation, it goes to a black screen and stops moving. It's been 10 minutes now.
Unfortunately you're not giving us enough information to solve your problem.
If you bought it from a retailer and it isn't an OEM copy, then you are entitled to call Microsoft Support.
Instead of choosing IDE, you should choose the following in your BIOS: