Router keeps dropping connection

I think you have the upper light blinking and lower light solid. Is that right? The upper light blinking means that the connection to your ISP is not working. Try unplugging/replugging the Ethernet cable in the top port (probably yellow and labeled "WAN" or "DSL" or something). Check the other end of that cable. If you have another Ethernet cable, try swapping it out.

If none of that works, call your ISP to check the connection.

This post is dedicated to describing the process of fixing an orange light on a Belkin router. But, first, it's important to know about the reason for the orange light. The orange light on the brilliantly-designed Belkin router provides an indication that either the particular connection had not been developed or the router is not capable of detecting the Internet. It might be due to the defected router, unplugged modem, and so forth.

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Try upgrading the firmware of the router, helps a lot.

can you replace any cables to and from this router? Also, is it possible to turn it off for 5 minutes and retry?

Check the "keep alive" settings in your router, there is usually a choice between having it constantly "pinging" to keep the connection open, or letting it disconnect when it has been idle for awhile. Make sure it is set to "keep alive". The wording may be different but it will be something along these lines. Go in your browser to the wireless router's configuration page (i.e. http://192.168.1.1 ). Depending on what brand router you have this ip address will vary, consult your documentation for which number is used.
Changing these settings may also help...  Wireless Router Configuration - Advanced Wireless Settings

Check the "keep alive" settings in your router, there is usually a choice between having it constantly "pinging" to keep the connection open, or letting it disconnect when it has been idle for awhile. Make sure it is set to "keep alive". The wording may be different but it will be something along these lines. Go in your browser to the wireless router's configuration page (i.e. http://192.168.1.1 ). Depending on what brand router you have this ip address will vary, consult your documentation for which number is used.

Turn everything off. Router, PC etc. all OFF. Then start the PC, wait 2 mins. Then plug in the power to the router. Then the cable into the PC. Then check fireware [Zone Alarm etc] to see if it is recognised as receiving data. Click on IE or Firefox.
If this fails, do it again Have a coffee break. Remember the cable connects to the broadband and it flows in and out without the dreadful instruction CDs given you.

Usually it means the connection is dropping. Contact your ISP and have them run a test on your line. In addition (and they'll ask you to do this anyway), replace the microfilter and the cable that goes from your router to the microfilter, to help rule out faulty hardware.