Can't ping pi after couple of days.

[RobOhRob]

Hello, I have set up my pi as a web server using apache2. It seems that after a couple days I can no longer ping/vnc/ssh into my pi. When hooking up to a monitor the pi still has an internet connection?...I checked on my router and the ip is not changing. I thought it could be a power supply issue so I bought a new power supply and also a new sd card and it is still happening.

[MaxK1]

Tell us more about your Pi and WiFi (Pi model and WiFi chip set) as well as your router. What (if anything ) does 'dmesg' have to say about it?

[RobOhRob]

Pi Model - Raspberry PI 3 Model B 1.2GHz 64-bit quad-core ARMv8 CPU, 1GB RAM running Raspian.

It uses the built in wifi. My router is a Technicolor from Spectrum. I can look up the exact router model when I'm home if that would help.

Also I am not familiar with 'dmesg'.