Go into channle settings, change it to one that not in mass use in your area (use inssider to check this), go into advanced settings and then services and uncheck all boxes in the top section.
Restarting the pc simply gets you a new ip address, this can be done without rebooting, as follows.
select RUN in your start menu, (if using win7 or vista, click on start menu and type run then select RUN when it comes up)
type CMD into the little box that comes up and hit enter or click ok
a window will open (black background)
type (ipconfig /release) without brackets, and a space after the g, hit enter/return
type (ipconfig /renew) without brackets, hit enter/return
and a new ip address will be requested from the hub.
---------- Post added at 18:21 ---------- Previous post was at 18:18 ----------
Also if you have bad wifi coverage in your home, you can try one of these.
Also Virgin Media does not offically support wifi, as each home is different, with thickness of walls, distance required, backgroud radio frequency polution etc.
---------- Post added at 18:23 ---------- Previous post was at 18:21 ----------
Also, for some reason mac devices like ipads/iphone etc like channel 13