I will explain in short whats my problem.
My roomate has e desktop PC and I have notebook PC. My roomate was using a cable internet, but I didnt had internet, so we decided to buy a router. So we bought "Dlinkgo Wireless N 150 easy router - GO-RT-N150" (this is what it says on the box).
After that I went with the brand new router to my ISP office to prepare the router for me (its common in my country for the ISP to setup ur router).
So I went back in my flat. We connected the router with the Internet cable, than from the router LAN port 1 we connected my roomate's PC (desktop PC) with the router and I easily found the wireless network with my notebook. Everything was fine. We were playing games, browsing in youtube and so on. But around 22:30 the internet became very slow and eventually stopped saying "Limited access", or "No internet access", but I still had strong wireless signal... All night we were without internet, we tried power-cycling the router and etc. it worked for 5-10 minute but with very slow speed and that was is. In the morning we called the ISP explaining the problem and they said "you will have internet after 5-10 minutes" and we had again very good internet. But this situation happened again the same night .... So we need a permanent solution for this problem. I don't know anything about routers and so on .... I've tried to access the admin menu but i keep getting the message "incorrect password" I think that my ISP have changed the password .... so I cant do anything right now -
SO first my question is - should I ask my ISP for the password or should I reset the router ( I am afraid that I will loose the parameters for the internet connection). I will ask my ISP for the password but I will need better help for how to setup the router for best performance - playing online games, browsing and dowlonad nothing more. IN case that my ISP doesn't give me the password what parameters I need from him if I had to use "reset to default button".
P.S: Please excuse me for my bad grammar in English, but I am from Europe (Bulgaria).