The VR_RDY pin is an open-drain logic output

The VR_RDY pin is an open-drain logic output which
indicates that the soft-start period has completed and the
output voltage is within the regulated range. VR_RDY is
pulled low during shutdown and releases high after a
successful soft-start and a fixed delay tD5. VR_RDY will be
pulled low when an undervoltage or overvoltage condition is
detected, or the controller is disabled by a reset from
EN_PWR, EN_VTT, POR, or VID OFF-code.

gigabyte ga-ep35-ds3l, циклический перезапуск.