I broke my laptop screen on my hp 4540s last week after it knowingly slid under my my chair . I purchased this. and after a quick 15 minutes removal and replacement of the screen, my laptop screen simply look up the procedure on youtube, just be sure for your specific model and there will most likely be instructions. this particular device required the removal of 8 screws and again took 15 minutes total. I am writing this review on my freshly fixed laptop!