I'm not much of a computer guy at the moment but my HDD died about 3 months ago and now I'm looking to upgrade to a Samsung 256GB 840 Pro SSD. I have an XPS 15 L502X, pretty standard, out of the box hardware, nothing fancy. I'm a tad confused and worried that there's the possibility this drive isn't compatible. I'm reluctant to spend extra money but I'm itching to get my laptop working again. I have my SATA Operation set to "AHCI" and the BIOS Version is "A10". (During my research travels I'm led to believe that BIOS and Sata are vital for SSDs to work.) Can anyone lend me some steps/information I may have missed to make sure that this SSD (or any SSD) is compatible with my system? Also while you're at it, maybe some suggestions for a better SSD to purchase, if there is one? (PS: I like gaming