windows xp home sp2 P4 3 ghz 512 mb ram ( some shared with video) brand new system will not stay connected to the internet. The connection is a local dial-up connection and before you say anything it's not staying connected for more than a few minutes.... If you connect and then start internet explorer it says you need to connect first even if you are already connected.... it will then work for a few minutes usually then disconnect...... Tried the same connection on different computers and they work fine..... even tried a different dialup service and it does the same thing on this computer.... I have replaced the modem with an identical model same thing.... ran a virus from an updated cd and that came back with nothing.... won't stay connected long enough to run an online scanner...

any ideas what could be going on here? oh modem is an intel 536EP