On 1/27/12 I purchased a new Asus N75SF-DH71 laptop ($1300.) from B & H for the sole purpose of photo editing. The laptop has all the bells and whistles; i7 CPU, 8 GB RAM, twin 500 GB hard drives, etc. I loaded Lightroom and a few photos and discoverd that when connected to and ONLY when connected to an external monitor the new laptop crashes/Blue Screen of Death when using "Adjustment Brush" in Lightroom. The laptop has been sent back and forth to Asus twice to no avail. Asus finally sent me a new laptop of the same model even though I requested to a choice of different replacement model laptop. The new laptop arrived I downloaded the Adobe software and as with the original laptop, the new laptop crashed when tethered to an external monitor. I immediately emailed the person I have been dealing with at Asus and she has not replied to any of several emails that I have sent over the past week. In an attempt to prove to Asus that the N75SF-DH71 has driver/hardware/software issues I went to Best Buy and purchased the cheapest Asus laptop they had on the shelf. I brought the $349 wonder home, downloaded the Adobe software, and connected an external monitor, also an Asus. As with my 4 year old Dell laptop and the Dell laptop before that the $349 laptop performed flawlessly. I scanned the Best Buy receipt as well as the serial number on the Asus box, and photographed the laptops together in an effort to validate my experiment. I put it all together in an email and sent it on to the person at Asus with an offer to drive to Fremont, CA and do a little 2 minute demo. I have yet to hear back from Asus. I think that as a consumer I have gone way above and beyond to demonstrate that Asus has a problem with this particular laptop model. You would think that Asus would be interested correcting the problem, apparently not. As it stands right now I am out $1300.