GS1920-24 cant boot up, cant restore to factory


Hi, i have a GS1920-24 which start blink sys led when i powered it, during start up all port led is up in red and green then off. After about 1 minute sys led turn off, and nothing work. i tried press and hold reset button at side but nothing happend.

Here is picture of board and video of startup progress:

All Replies