Sa tagal ko ng gumamit ng modems at mg OSes, madalas hardware error ang router kapag nagloko siyang bigla na dati naman ay hindi. Sa ibang case naman ay merong incompatible software sa windows na biglang pumapatay sa net for some reason- especially when someone is gaming online on wifi. Mas safe kung sa lan. Simple network fixes via batch scripts or using softwares like CIR sa Windows is already enough to resolve the problem of net reconnection, pero yung mamatay ang net while connected is a different case scenario. You have to find the culprit using a network management tool. Marami din softwares na AIO as the word says "gameboosters"/ latency optimizers....
I-hardware-reset mo yung router mo, baka nandyan lang ang problema. Be sure alam mo yung previous settings nyan para di madagdagan ng problema he he (mac address para sa accoutn, dhcp settings,....). I'm sure, ayos naman yung hardware mo to handle online gaming (CPU/RAM). Kung mag-OS upgrade ka, be sure na supported ng router mo ang Win10 para sa drivers nya. Be confident, makikita mo rin yung sagot while doing something!