Nevermind, it was caused by a faulty RAM module which didnt let Bios update. Removed one stick and now it's perfect!
Hi When installing Intel HD 2000/3000 latest drivers (or even older ones), as soon as the computer boots into normal windows (Clean windows 7 home premium install), the screen goes dark. I can see the backlight burning, but it's just showing black. When booting into Win safe mode, the screen works. After removing Intel HD drivers, windows works in normal mode with the default VGA drivers. Same issue if I install Intel HD + Nvidia graphics drivers.  Tried even with Windows XP (Not designed for this PC). First few boots the intel graphics worked, but then the screen garbled up with colorboxes/lines and would only work again in Safe mode.  Bios update done, latest and old drivers tested, HDD changed even.  Or is this some conflict between different drivers that's causing this?  Br petzkin (Devoted to Dell)
XPS L702x display goes dark after intel HD driver install