Hi Kiran, thank you for your kind answer. Actually I have active SP1 and latest drivers working fine. I just need do format the PC because of  accumulated file clutter and register problems due to of extensive use (many programs install/uninstall) that I'm not able to really clean out. So I'd like to make just one installation instead of restore to factory then update it, but unfortunately the latter seems the only way.  Thank you again and Best Regards 
Hi, I bought an Alienware M11XR3 during 2011, it came with win7 and no service pack.  I recently created an USB recovery stick by Alienrespawn  but I don't think it is updated to win7 SP1 and to new dell drivers for audio, video etc... Is there a way to check it? Is there a way to add these updates to an USB recovery stick and to the original recovery partition? It exists an unofficial but suggested software to do it?  Thank you a lot
Add updates to Alienware recovery partition