If I turn around the plug from my adopter connected to the Q10, connection is stable. Unless I pull the plug away - hence, it will be disconnected. When you plug the adopter to power, a red light appears in Q10, then will boot after switching ON via remote control. Q10 looks stable after boot, and issue will occur randomly sometimes after 15 minutes, or even after 1 hour.
I switched to Pcristi's CFW 2.1.4 to check if same behavior will happen. Issue occurred 10 minutes after boot, but 2 hours since then - no issue yet. Was thinking if this has something to do with firmware.
Thank you Dutchie53 for standing by. I still love my Q10 and won't give up just yet.