Do you have the same issue when you are hard wired? Meaning, connect your modem directly into the computer, and see if you have a stable connection? If the drops continue, you may wish to call your ISP (after making sure all your connections are secure).
Does the issue only happen when you are wireless? You may wish to check the firmware on your router and/or reset it to factory defaults. How to do this is fairly easy, but, varies from router to router. Netgear is a good easy example, and there are a lot of negear's out there so, we may get lucky and that's what you have!
in your address bar (where it currently says
https://www.sevenforums.com/etc etc type 192.168.1.1 then hit enter
a box should pop up asking for a username and password. Unless you've changed it, on netgear that should be admin/password
you will then be in your router's web interface. With a netgear, typically the first thing it will do is prompt you if a firmware update is available. If it it, please, allow it to update!
Once the update is finished, go to your wireless options (use the navigation on the left of the page) and change your channel from "auto" to 6 or 9. You may be getting interference from other wireless devices, and channels 6 and 9 tend to be less prone to that.
If all this does not work, under administration you'll see a factory reset option, reset your router to factory settings. Once you do so, you'll be back to your default username and password (SSID and passphrase). Look for a sticker on the bottom of your router for that info. If you are now stable, then, reset your username and password to what you want them to be.