Random disconnections from Internet

[Polis92]

My internet disconnects randomly . I have changed the modem but its still happening so i guess its a virus or something so i ask for some help.Please help me i have also done the hijack this and attach the log . Thank you

 

[gguerra]

You will need to offer more details... What kind of OS and internet connection, You mention modem, are you using dial-up or do you mean a cable/dsl modem?? You question is too vague

 

[Polis92]

Im using windows 7 with a wired modem - router adsl connection .