First of all, hello to this forum! So, when using my computer today it suddenly crashed with a DRIVER_IRQL_NOT_LESS_OR_EQUAL blue screen caused by some usb driver. When I was looking into this crash my computer crashed once again, this time with an IRQL_NOT_LESS_OR_EQUAL message. A few minutes later it crashed again, showing PAGE_FAULT_IN_NONPAGED_AREA. And after that I got a similar crash caused by another driver. I have managed to find causes for and solve BSoDs before, through googling, but this time I feel it's just too much... I checked Window's reliability diagram and it says that I haven't installed anything since May 31st, when I installed some Windows updates and an update to Skype, nor have I replaced any hardware recently. I hope you can make some sense out of the dump files so that we can solve this problem (hopefully without having to replace too many parts of my PC, ). =================== Other info: - I'm using ESET Smart Security 7 as both anti-virus and firewall.