Hey guys, just wanna share that you could give D-Link support a call if you face any router problems.
I called them this morning at 6622-9360, as I had faced some router issues.
Long story short... here's what you'd need.
The call took about 30mins as he had to guide me to do a hard reset on the router. But it was worth it.
I got it done, and now I'm surfing the net smoothly.