IP problems or Network adapter problems and it connects for a few seconds and then disconnects.

System

This discussion was created from comments split from: ACER ASPIRE 5 A515-51G-53MR Wifi network issue.

XenonMars

My ACER constantly has either IP problems or Network adapter problems and it connects for a few seconds and then disconnects. Also, while connecting it says that my Wi-fi has older security standard that may not protect me. 
Restarting my router doesn't help. 
Internet connection is existing and is safe but it says that there is no internet, while on my mobile phone ( not acer product ) has normal connection with constant internet connectivity.
My drivers are also up to date.
Can you help me?

Ro46

Try this: Search for Network connections / Double click Wi-Fi connection / Wireless properties/ security tab/ change the security type to the same one your router is using, to find out which type of security your network is using click in the the WiFi  icon and scroll down to properties