Keeps dropping internet. the internet light on router flashes. i have to power it down and then it works for a while

Home wireless networks based on the 802.11b or 802.11g standards transmit their signal in a narrow radio frequency range of 2.4 GHz. Various other electronic devices in a home, such as cordless phones, garage door openers, baby monitors, and microwave ovens, may use this same frequency range. Any such device can interfere with a Wi-FI home network, slowing down its performance and potentially breaking network connections.
The 2.4 GHz Wi-Fi signal range is divided into a number of smaller bands or "channels," similar to television channels.Many wireless products ship with a default Wi-Fi channel of 6. If encountering interference from other devices within the home, consider changing the channel up or down to avoid it. Some Wi-Fi channel numbers overlap with each other. Channel 1 uses the lowest frequency band and each subsequent channel increases the frequency slightly. Therefore, the further apart two channel numbers are, the less the degree of overlap and likelihood of interference.
If this won't work, Then consider buying a new wireless router as your current is deemed broken.