Do you need a computer to access Wi-fi?

In my house we have wi-fi connection through modem (I guess that would be the router) and every device that uses wi-fi is connected to the modem, even my pc. I do not require the pc for other devices to make the wi-fi connection.

You're a bit outside my bailiwick now, unfortunately, but someone else who knows more about what you're specifically asking will hopefully have a better answer for you.

I can give you some general knowledge which you can then apply to your specific situation.

The strength of your signal depends on a lot of things, and if the "linksys" that you're referring to is your router, that is one of the possibilities, so I'll mention that one first.

- Your router can be a problem in a few ways. It can hang and freeze, like any electronic device left on for long periods of time. The most common way of resolving short-term connection issues related to the router is to cycle it. There are generally three ways to do this - the fast way is to unplug the router at the router (rather than at the wall) and leave it unplugged for over 15 seconds before plugging it back in. The middle way is to do a longer cycle, unplugging it for a few minutes. The long way is to factory cycle it, which will depend on your model (and may require a small tool or poking implement.) In general, if cycling it normally doesn't work, you may want to call the manufacturer (if you own it) or your IP (if you rent it.)

- The speed of your connection is an obvious one, but the stability is usually seen as more important. Unstable connections will experience more packet loss, which is generally seen as worse than straightforward lag. Very unstable connections will experience periodic interruptions. This instability can happen because of signal interference at your end (moving the wifi-capable device closer to the router, or plugging it directly into the router will help with this) or it can be an issue that your IP needs to address.

You may need to replace your router if it is very old and experiencing issues.

Yea, i'm not sure how old it is but its at least five years old. Thanks guys for the help, I have some idea on what to do now.