As it says in the tutorial, use the drivers given by 1) installer and which are quickly updated via 2) optional Windows Updates. Then only import drivers still missing in Device Manager. DO NOT change out drivers given by either unless there are performance problems pointing to those drivers. Driver Install - Device Manager

It would be good to know for others who find this thread if you did indeed mark the Win7 partition Active and then run Startup Repair 3 separate times to try moving the System boot files to your Win7 partition. Unless that was done then repairs might have worked. Please clarify this.