thanks, freebooter. sorry it took me so long to see your reply. what i don't understand is when i click on "here" in your reply, it talkes me to SDK, but if i click on the URL you provided, it brings me to ADK instead. i am confused--and also, when i find out exactly what to install, will the old version need removal or will the new installation write over the old? in addition, where is this file? i don't even know how to find it. i do not find it in the 'troubleshoot' section in system settings.
sorry i am so confused with this. it's not the kind of thing i am used to. i can tinker with lots of stuff, but this is my first experience with the performance troubleshooter...
and, why would windows 10 install an 'old version'? even if it is, why would it not run? never heard of this.
Edited by circe801, 05 October 2017 - 04:02 PM.