You don't give enough information for anyone to help you. Did you recently
make any changes to hardware or software? Is this a new installation? etc.
Please take a bit of time to write down exactly what happened before the
problem started. In the meantime try this google search for some places to
start troubleshooting.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.