To Whoever May Be Able to Help, Last week, I began having BSODs without much useful information: NirSoft BlueScreenView isn't showing drivers for most of them. The system is a Lenovo G770 notebook, Win 7 Ultimate. It has switchable graphics, whatever that is, which periodically pops up a dialog indicating that such-and-such isn't associated with a graphics processor. Since I usually use "simple" stuff (Eclipse, LibreOffice, javac, etc.), I always choose "low power." But I recall an upgrade of something, perhaps Adobe Flash or Apple iTunes, qt, etc. to which I chose high performance, since it actually used video. I'd have kept better notes, had I thought this would spawn BSODs. But that is the only "change" that I recall. Win 7 computer mgmt dev mgr think my video drivers are up to date. I have no idea where to look next, or what to do (other than throw out a 2 year old machine). I have attempted to upload the requested information. (Firefox seemed to be able to do this, but uploading it from IE 11 kept generating errors.) I got another one shortly after posting this. I'll send its dump file, too.