I'm guessing this access point (router) has no viewable log. If it does this would be a good place to start.
You could log into the access point (router) and through the GUI for configuration save the current configuration (probably as a file on your PC) then reload the firmware. Hopefully a new version will be available. After saving the configuration you could also return to the default configuration, this is often an easy to find option on home or small office category of networking equipment.
You can probably gain access to the network access device by putting the gateway IP displayed in the screen output of ipconfig /all in to your browser as a destination. You may know the password. You can have a google festival and find the default log in name and password for this device too. like user will be administrator and the password the manufacturer (ie belkin) of the device or even just password.
Since you seem to indicate that this trouble occurs at a regular interval perhaps you should check the length of time the DHCP leases are valid. Losing connectivity repeatedly after the same amount of time and being able to restore connectivity points in this direction. Though connection lights indicating the failure do not.
Check my snippet of screen output below. As you can see the lease is good for a longtime. This is the default configuration from the manufacturer.
windows assumed
ipconfig /all
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Lease Obtained. . . . . . . . . . : Saturday, November 27, 2010 9:41:37 AM
Lease Expires . . . . . . . . . . : Monday, November 25, 2019 1:22:49 PM
sorry to ramble, im just taking a stress break from homework
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