Disconnect the USB cable. Reassemble the T95 (don't screw it shut yet – test first). Connect HDMI and power.
The stock firmware on many T95 units has been criticized for being "a mess," with system folders filled to capacity and even reports of pre-installed malware. t95 custom rom
For advanced users, ROMs (like LineageOS or Pixel Experience) can run on newer T95 models (Android 9+ with Treble support). Disconnect the USB cable