WatchGuard, thank you for replying.
I asked "not" to because all I've seen is that solution.
So here's what I've done so far:
1). I tried to reset the TCP/IP using netsh.exe
2). I tried using command prompt typing "ipconfig /all" - "ipconfig /release" - "ipconfig /renew" which I have no idea what it is since I'm a total idiot about computer system settings.
3). I tried diable WMM, and since it doesn't work I switched back to "auto"
4). All those reconnecting/rebooting both router and cable/rebooting laptop, these helped me to be able to post thread...
To answer your question:
1). Netgear N300, WNR2000. It's a 802.11b/g/n 2.4 GHz type. After looking up some websites I wonder if this is the problem:confused:
2). I believe it is a DHCP
3). It shows a bunch of stuff which I don't even know where to begin
4). No, I'm not able ping my default gateway. It shows "request time out"
6). Arris TM822G from Optimum with the Netgear router.
I hope these answers are useful, except the third answer since I really don't know what information do you want, or just the whole thing.
Again, thank you for your reply!