3. Re-test the effect of use of the wireless signal source, if the wireless signal found is very weak.
Router Connection 4. Update to the latest driver for the wireless network card and detect if the hardware is corrupted. This may be a hardware or drive issue.
Five, away from or switching off the interference device, there may be signal interference sources such as microwave ovens, cordless phones, etc. around the wireless signal.
6. Modify the wireless signal channel to be 1 or 11. There may be multiple wireless signals in the vicinity that are concentrated on one channel, such as 6 channels.