Full access to android in the off state via PC?

Question

Android

Connecting from win 7 -> android
OS: Android (get full access)
1. How to get full access to your smartphone (when turned off) from a PC?
2. Detect spyware file? (maybe tell me through which program you can identify it, I just need to identify it, and not just demolish the firmware)

Answer 1

Boot into recovery, if it can dump - do it, or by ADB.