Hi there,

Have you tried doing a factory reset on the router? Theres normally a hole for a pin at the back of the router to do this. After doing this reset all the settings in the router to normal and see if it works..

Also try upgrading the firmware and/or driver of the router and of your wireless network card (can be found on the manufacturers website).

Do you live near high voltage electrical wires or next to a train line? This could also be disrupting the signal... (train every 9 mins?... )

Let us know how you get along

Regards
Mathias