See my Windows Reinstallation Guide/A Clean Install of Windows 7: [URL]  You can use the retail .iso to attempt a Repair Install, if this works you shouldn't be prompted for product activation. If you have to perform a clean installation you can do this using the retail .iso, for this case you will need to input the 25 digit product key on the COA and activate via phone to Microsoft. The guide gives full instructions on how to do this. In the worst case scenario that you cannot activate your product at all you can use an unactivated version of Windows 7 as a trial for 30 days which should be ample time to request the DVD from Dell.
hi all our dell workstation  has a loop when  boots after a power outage : raid 1 with intel it'ok, 2 disk member are green, post OK, windows starts with logo, but after some seconds, blue screen and reboot forever, repair ask..no automatic repair possibile. the COA  says ....Dell Windows 7 Professional OA so i assume that is a OEM installation with preactivated license , we have no dell dvd installation disk and we have no time to ask it to tech support, we must come back to production  if it is possibile with a REPAIR not a CLEAN install , so YES only with the retail dowloaded iso from your links. i tryed also these first solution , same issue: last knon good congiguration, safe mode, online repair from F8 and online startup repair and system restore, also from command chkdsk (i see system partition D and i can access to it, so the disks seems are ok, as the raid 1 ) start with vga ......nothin same issue, at the same point of boot. We will try also to "disable autorestart after system failure" to see the blue crash error, but i think the last solution is an offline REPAIR from a retail dvd win 7 pro x64 , i dowloaded it from your links and burn it. MY QUESTION: if i boot from retail disk not oem dell disk, and i try a offline REPAIR INSTALLATION, after that try a start-up repair and select system partition, if the pc boots up OK, must i re-activate my windows copy ? or the local license certificate file with other OEM Dell files will be deleted ? if YES, all ok but i must activate another time my win 7, can i do that only with change product code with my COA and MS phone? or i need to install FIRST my dell certificate with slmgr.vbs and THEN change product code with COA key ? So the question is WHERE i can find this file to backup? and if startup repair fails too, we can try also system restore from retail dvd, what about  windows activation in this case? other suggestion if all fails? thanks for you attention
repair a win 7 oem , with win 7 retail disk 