Can surf net but cannot join or play MP games

Registration date
Sunday June 18, 2017
Last seen
June 19, 2017
- Updated on Jun 18, 2017 at 04:32 PM
well i have a problem with playing multiplayer games such as gta sa, counter strike, the problem is i can't even search for server even if finds and join the game will be like "lost connection to net.
also in counter strike when try to join game it stops like the game doesn't get enough net
"note: i'm using modem model ZTE ZXV10 and i'm using a cable from modem to pc so when i enter a server the LAN where the cable is turns off for 3 secs or more and says cable net is out but it's not"
i tried every solu that may help me such as
restarting the modem "didn't help"
reinstalling game " didn't help"
foramtting pc "didn't help"
changing cable "didn't help"
it's somekind of refuqing sending net to the games.
hope i find the solu and thank you all
note: i'm using Win XP Sweet 6.2