Most common questions used to investigate
Did you restart your router?
Did you check for potential problems in the Internet service itself?
Is there a problem with your device?
Have you tried flushing the DNS cache?
Do you know if there's an IP address conflict?
Do you know if you have an outdated network driver?
Common conclusions
The best way to fix Wi-Fi problems is to restart your router as this is likely to flush out all the memory issues. Most times, you'll simply have to unplug the router's power wire to restart it. Of course, some routers also come with a restart switch to make it easy for you.
Ideally, you can use your mobile device to check if the Internet is up and running in your place or not. This will help to determine if the problem is with your Internet and if so, you can call the customer service right away to know when it will be restored. This step will also give you a good direction as you can eliminate this problem completely.
Sometimes, the problem could lie with your device. So, check if the Internet can be accessed on other devices and this helps to zero in on the problem. Try restarting your device if that helps and if you're sure that the problem is with the device, take it to the local computer shop to fix the problem. Many times, you may have to reinstall the network driver but if you've never done it before, it's best you allow professionals to handle it.
The DNS cache is a place that stores all your recent visits to websites to help load the pages quickly for you. However, this DNS cache could become corrupted due to a ton of reasons or it can also be due to viruses and other malicious pieces of code inserted by anyone who is looking to harm your computer. This corrupted cache prevents you from connecting as there's a mismatch in the IP address. The best way to address this problem is to do a DNS flush.
An IP address conflict happens when more than one device is assigned the same IP address. As a result, both the devices won't be able to connect to the Internet. While this could be rare, it's still possible. The easiest way to resolve this problem is to go to your command prompt and type "ipconfig/release" as this will cause the server to assign a new IP address to your device. This will solve the IP conflict problem as well.
An old or outdated network device can prevent you from connecting to the Internet. The best way to know this is to check for a yellow mark in the network device. Alternatively, open your network adapter and this would indicate if there's a problem.
Change it if you know that it is old and outdated. Otherwise, you can stick with it.
References
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