Dell XPS 13 (l321x series) 2012-2013 Drivers for new Install of Win7

Hello Everybody!

I am trying to Re-install Win7 on my sisters Dell XPS laptop .I have been installing Win7 for some time now and never had any problems i couldn’t solve.
On this install it keeps askiing me for hardware drivers in order to enter to windows instalation , but none of the drivers seems to work.Drivers
Currently i have installed Ubuntu OS just to see if it was a hardware failure but it runs just fine.
Any advice or recommendation will be greatly appreciated !

Thank you for your time!
Ste