Cisco router : connection problems

Hello again,

I have a Cisco router (don't know the type for sure). I have a lot of problems with it.
1st: I have lots and lots of latency with the wifi when I play games and stuff. Normally when the wifi shows 5 bars it has to work perfectly right? How can i solve this latency ?

2nd: I have problems with the conection of the wifi. Sometimes it works perfectly for like a week, no latency, perfect connection. But sometimes i just can't find my wifi. The router is on, every cable connected perfectly. I know it's not the problem of my pc because when I search the wifi on my psp it also can't find it. On the troubleshooting on windows 7 stands that I have to disconnect the power supply for 10 seconds but when I do that, I can find the internet for like 1-2 minutes so i can connect during that time but suddenly, it disconnects again. It's really frustrating me.

With out knowing your make and model of your specific router there are a few things to try. First update your wireless network adapter for you laptop. Check for a firmware update for your router.