[Q] Phone suddenly behaves extremely strange (no charging, home button does not work)

I had the phone rooted and suddenly started to behave stranger and stranger as the day passed:
- pressing the volume keys would wake up the phone
- the processor did not enter deep sleep
- charging did not work while the phone was on.

What I did was to re-lock my phone. After that unlock it, flash TWRP and then 100% Pure Stock 5.0.2 7.19.401.22 CL482424 release-keys from http://forum.xda-developers.com/htc-...01-22-t3121417

Unfortunately the phone works even worse now:
- pressing the volume keys would wake up the phone
- the processor did not enter deep sleep
- charging did not work while the phone was on.
+
- can not download any app from play store
- home button does not work at all
- notification area does not appear
- get constant error messages that System UI has stopped

Even if I flash a backup that previously worked I still get this problems.
Could the fact that I had xposed framework installed cause this ? (I thought when relocking the phone for sure any files used there would be deleted)

Unfortunately I have not found the RUU for my phone to download (only on a paid site and really doubt this would work)

Has anyone encountered this problem or have a possible solution ?