router kicks me off wifi

[#1]

Help.......
My router keeps kicking me off WiFi on my netbook every 2-5 mins,other devices ie,windows phone(dont laugh,i like it),xbox one and a couple of I phones get booted but nowhere near as often,I have tried changing channels and desyncing 5ghz but to no avail,everything wired has no problems,this is a replacement router that PlusNet sent out about 6 weeks ago.....any other ideas i can try would be most helpful

[#2]

Is the netbook further away from your router than the other devices? Does it show the same signal strength as the others? Does it use the same WiFi band as the other devices eg 2.4Ghz or 5Ghz?

[#3]

Xbox one is on 5GHz and is upstairs,everything else is on 2.4 and in the same room as the router,1 iPhone is sometimes upstairs,that doesn't seem to get kicked as much as the others though