What other info do you need?
Operating system, modem make model, ISP, website host, AV software, who's firewall? that sort of stuff.
OK, in the meantime, check that your DNS Client isn't disabled.
1. Press the
WINkey+R to bring up the Run dialog box.
2. Type
services.msc in Run and click OK.
3. Look for DNS Client in the name column and double click on it.
4. If the startup type is disabled, simply click on the drop down menu and
select Automatic. Click Apply and followed by clicking on the Start button. Alternatively you can also reboot your computer and the DNS Client service will automatically start by itself.
if it still won't start, check the event log for errors ... WINkey + R, type eventvwr, click OK, expand Windows Logs > System.