Hello, I am experiencing frequent BSOD with varying error messages, though IRQ_no_less_or_equal has been a frequent sight. The computer in question is a Lenovo W540 and has been giving me BSOD for a several months. Unfortunately, I've been travelling abroad and have had very limited opportunities to try to resolve the issue. I've spent some time researching possible causes and attempting to solve it myself - every seems to point to a driver issue, particularly video drivers, but I've uninstalled and reinstalled all the drivers I could think of and have found no relief. The crashes don't happen frequently for general computer use. I am a photographer and do a lot of photo editing (Lightroom, Photoshop mostly) and also run a local development webserver on my laptop, but have never experienced BSOD while working on these things. Very rarely, I experience them while browsing (Chrome) often while watching videos (often following some interaction - entering or exiting fullscreen), but sometimes they occur while just browsing. However, they much more frequently occur while playing games. Attached are the files requested in the BSOD sticky. If any further information would prove helpful, please feel free to ask. Thank you!