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[Novakingwai]

My router was working fine.  Then 1 day I started having slow internet.  My ping in games would jump up from ~60 to about 400-800.  Did some troubleshooting with my ISP.  Seemed like my modem was to blame.  So I bought a Netgear one from BestBuy.

Everything was fine.  Then 1 day the internet stated disconnecting.  None of the computers could see the router in the wireless networks.  I found the only way to solve the problem is to unplug the power and plug it back in.  Strangely it seems to happen a lot late at night like around 11PM or 12 midnight EST.  

Before with my old modem I just had automatic settings and DHCP.  With the new modem it wouldn't work so I called DLink and the tech guy walked me through some steps, one of which was changing the ip address from 192.256.0.1 to 10.10.10.1.  Whenever I reboot the router after a disconnect the computers say "there was an IP address conflict."  Maybe this has something to do with it?

I saw in another topic someone said their router's time was wrong.  Mine said it was 2010 so I updated it to automatically sync with ntp1.dlink.com and now it shows 2012.  Let's see if it fixes now.  My mom's laptop had a similar problem with Skype.  For some reason the clock kept resetting to 2000 and Skype would not work (everything else did).  When she resets the time to 2012 it starts working again.

[FurryNutz]

Welcome!
What Hardware version is your router? Look at sticker under router.
What Firmware version is currently loaded? Found on routers web page under status.
What region are you located?
Are you wired or wireless connected to the router?

What ISP Service do you have? Cable or DSL?
What ISP Modem do you have? Stand Alone or built in router?
What ISP Modem make and model do you have?
If this modem has a built in router, it's best to bridge the modem. Having 2 routers on the same line can cause connection problems.
To tell if the modem is bridged or not, look at the routers web page, Status/Device Info/Wan Section, if there is a 192.168.0.# address in the WAN IP address field, then the modem is not bridged.
If the modem can't be bridged then see if the modem has a DMZ option and input the IP address the 4500 gets from the modem and put that into the modems DMZ.

Some things to try:
Turn off ALL QoS or Disable Traffic Shaping (DIR only) GameFuel (DGL only and if ON.) options. Advanced/QoS or Gamefuel.
Turn off Advanced DNS Services if you have this option under Setup/Internet/Manual.
Turn on DNS Relay under Setup/Networking.
Setup DHCP reserved IP addresses for all devices ON the router. Setup/Networking
Ensure devices are set to auto obtain an IP address.
Set Firewall settings to Endpoint Independent for TCP and UDP under Advanced/Firewall.
Enable uPnP and Multi-cast Streaming under Advanced/Networking.

What wireless modes are you using? Under Setup/Wireless/Manual.
Try single mode G or N or mixed G and N?
Channel Width set for Auto 20/40Mhz or try 20Mhz only.
Try setting a manual channel to a open or unused channel.
What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES, so you might want to try TPIK only or Auto.
What wireless devices do you have connected?
Any cordless house phones?
Any other WiFi routers in the area? Use InSSIDer to find out.
Turn off Short GI, WLAN Partition and Extra Wireless Protection if you have it. Under Advanced/Advanced Wireless.

Turn off all anti virus and firewall programs on PC while testing. 3rd party firewalls are not generally needed when using routers as they are effective on blocking malicious inbound traffic.
Turn off all devices accept for one wired PC while testing.

Check cable between Modem and Router, swap out to be sure. Cat6 is recommended.