Problem with USB OTG

Hi evrybody,
I'm getting some problems with my TQ210 board. The usb OTG stops working and I didn't get android logs anymore. the board is no longer detected by my pc and I can't see  it in my connected devices list in windows.
Sometimes, I got vertical black lines on the screen and the os dosen't respond!!!!
anyone facing the same problem?

any help?

Thank you

Best regards