Windows 8 limited connection Wi-Fi?

Alright I like to play games like minecraft, runescape, and Elders Scrolls Online on my laptop all internet based games. I have a laptop its a dell inspiron something, with windows 8. When I'm doing something on the internet every like 2 minutes I get disconnected from the games online, and i can't use search engine. I get limited connection on my Wi-Fi. To fix it I've been putting it in airplane mode then back of, making it work for like 3 minutes having to do it again, again, and again. Its a hassle and annoying. I use comcast as my Wi-Fi provider, and I got there wireless motem they gave me, my brothers pc works fine with it. So if anyone can help me fix this I'll be glad.

Check your power profile in Win 8 and turn off the power saving features.

Go to the support website for your brand wireless router and update the firmware and driver.
Reset the wireless router.
Move close to the router check the signal strength it should show excellent move to your usual spot and check it if it shows low it will disconnect at random times. Relocate router or upgrade to a new router that is Windows 8 compatible and the new version N.

This is usually caused by a weak signal to your Wi-Fi.
What is the signal strength
Move location even if a little may improve signal.

Speed based on Wi-Fi