can some one tell me why i can't see my new topics ?
Sometimes, when you first post, the security protocols on the forum may block your message. These protocols were introduced because of the large amount of spam the site was getting.
If you believe you are being blocked then you should contact runn3R via PM here:
http://forum.giga-byte.co.uk/index.php?action=pm;sa=send;u=13 so that he can check the security settings and unblock your account.