In this case I'll try to share 10 ways or steps how to fix Wifi connected but no internet access easly on Mac, Windows Xp, 7, 8, 9, 10 and Android.
How to Fix No Internet Access.
There are usually two places to look if you are facing network issues, from router or device having the issue.
1. Restart Device
The good ol’ reboot is a fix to many software problems and network issues. Turn off both router and modem (if they are separate) and wait for 30 seconds before restarting them again. Additionally, you should also restart your PC to ensure things are clean. Once all the devices are reset, try connecting again to see if it works.
2. Check Your Modem Lights
There might be a problem with your internet connection instead of the devices connected. To confirm, check the “Internet light” on the router and make sure it’s working. Additionally, ensure there is no unusual behavior; such as extraordinary light flickering.
Ideally, the DSL lights should be ON (or turn green in some routers), and the WiFi indicator lights should blink. If you are not sure how to check, contact your ISP customer care services. Confirm what’s wrong with the Internet and how much time it may take to fix it if the problem is at their end.
3. Flush DNS
You should flush DNS to ensure it isn’t causing any trouble. In Windows start menu type “cmd” and open it as an administrator.
Command prompt will open up, here type “ipconfig /flushdns” and press enter. This will flush the DNS cache.
4. Use Built-in Troubleshooter
This can be easily fixed with the built-in troubleshooter program that comes with Windows and Mac.
For instance, let’s take Windows, here the built-in network troubleshooter can solve or at least answer most of the network related problems. Right-click on the network icon in the taskbar and select “Troubleshoot problems.” Windows will automatically look for problems and fix them. If it cannot fix it, then it will at least let you know what the problem is. You can search for the solution to the problem online, or even ask in the comments below; we may be able to help. The same option is available for Mac OS X as well.
5. Fix Network Driver Issues
Sometimes an old network driver or corrupted one can lead to no internet on connected WiFi problem. To fix network driver problems, Press Window+R keys and enter “devmgmt.msc” to open “Device Manager.”
Here expand “Network adapters” and right-click on your network. Now select “Update driver software” option, and you will get two options to update the driver, manually and automatically (online). Try connecting your PC to the router using an Ethernet cable to get internet access. If there is no problem with the router or internet connection, then you should connect easily. If connected, click on “Search automatically for updated driver software, ” and Windows will automatically find and install the right driver.
In case you can’t connect, then you will have to manually download the latest driver from manufacturer’s website on another internet connected device and move it to your PC. Once you have the latest driver, use the “Browse my computer for driver software” option to manually install the driver software.
6. Reset Your Network Connection
As the name suggest Network Reset disable and then reinstall all your network adapters and set other networking components back to their original settings. Windows will forget your Ethernet network, your WiFi networks and passwords and your VPN connections etc. Meaning it’ll It will delete all of your stored WiFi credentials and VPN connections. This is why resenting your network should be your last resort.
If you are on Windows 10, click on the Start button > Type Network Reset.
A new window will open warning you about what will happen when your network. Click the “Reset now” button to reset the network and restart your PC.
7. How to fix Internet issues on android
1. Make sure the date and time is correct on your android phone or Tablet.This may sound stupid but in a number of cases this is the reason many users are unable to browse the internet.
2. Another thing to try is to go into settings and look for "Backup and reset".Now look for :Network settings reset or something similar and go ahead and do that. Don’t worry this will only reset settings related to your phone networks which in most cases can fix the issue as mentioned above. Don’t worry you wont lose any data.
You could do a full reset but I do not recommend it, only do so if you don’t have the option above and you have exhausted all other possible solutions but also remember to do a backup before you begin.
3. Connect to your router or Wi-Fi with a Laptop that’s causing the issue. Now look at the bottom of the router to get the information on how to log in. You will be required to type in something such as: 192.168.0.1 or something similar. A log-in page should appear (Remember this is different for every router). The user name is usually Admin and the password is blank or Admin. Once you have logged into the router: Find the Wireless settings, then find the access point setting and then wireless modes.
Under wireless mode you want to change 802.11.b+g+n to either 802.11b or 802.11g. You will have to choose one settings save and test your device to see if it connects or try the one but one should allow your Android device and other device to work just fine.
