I have Asrock G41M-VS3 motherboard. Changed the power supply and started pc after a long time and now i am unable to access internet through lan port. I have tried reinstalling os , cleaning all components and connections, tried installing official and realtek Ethernet drivers. When installing drivers from official website getting error " Installer can't find athreos ar81 family Ethernet controller". And when installing realtek driver it shows for sleep mode. But I have enabled the on board lan in bios and it didn't worked. Also when connecting to broadband shows 651 error. Please tell the solution.