Internet Light on Modem PTCL EVO Modem Model no W150D-U

Hello! brothers/sisters

I am having problem with my modem I think.. Internet light on modem goes off every 10-15 almost. I have to restart modem to get transferring of data. OR I have to delete configurations and have to redo the configuration from control panel of modem.

I have contacted to ptcl customer support center many times. They just say you have configuration problem but I do not think so it is configuration problem.

Please help me.

Best Regards.