overpower

Hi ! Maybe someone has got schematic to MSI Z97 Gaming 3 rev: 1.0 Motherboard MB is not stable and is shows overload on 3.3V sensor. Without schematic i can not fint it. It shows 4.2V on 3.3V so is much more than tolerance. MB is restart every 2-5mins. Voltage was reading from PCI and Pci-e...