Hi there danman15,
Firstly , welcome to
CompuForums. I hope that you can visit our forum often in the future and post - rather than just receive our advice, fix your problem and then disappear. We provide our help for free, and all we ask in return is that you participate in our forum and refer your friends, or consider a premium membership.
Now - if your modem does not have a reset button, then what you need to do is unplug and leave the power off for around 30 minutes.
However - this could be caused by other things.
Do you have any networking hardware such as a wireless router? And also do you remember changing any internet settings recently [or downloading a "speed booster" program]?