In most cases, if your system does not get much signal, it means your Wireless Access connection is weak. There are some tips which you can use to build a strong signal. Keep your wireless router pointing towards the outer wall to get strong signal. Also adjust the router and keep it away from metal objects. Replace or adjust your router antenna in the direction where you can receive strong signal. Sometimes, signals can be transmitted from router to computer, and there may be a problem in vice versa. In such case, it is advisable to replace wireless network adapter. For better signals you can use a wireless repeater which can be placed in between computer and the router to get strong signal. Finally change your wireless channels as you do in radio, reduce other wireless interface like cordless phones, etc which may interupt the signal.