@_The Doctor__ Would the powersupply be a problem if ATR files work fine? But it is the USB source connected to a 2.5A outlet When in the keyboard test, the option key was used to get there, and a nice constant tone is made when I hold it down. I have not modified the XE in any way. This morning I opened it up to examine it. No modifications have been performed by previous owners.  -- what other symptoms would speed killing caps reveal themselves through?  1080 emulation? I've tri