How to Fix Internet Connection Issues on a PC

Jude Sarkar

Jun 30, 2025

7 min read

Updated: Aug 7

In today’s digital age, a reliable internet connection is not a luxury but a necessity. Whether you're working remotely, attending online classes, or simply streaming your favorite show, a disruption in your internet service can be frustrating. If you’re facing issues where the internet is not working, you’re not alone. Many PC users encounter problems and search for solutions to fix their internet connection or internet on their PC.

In this blog, we at MicroSec®, your trusted remote computer repair service provider, will walk you through step-by-step solutions to fix internet connectivity issues effectively.

Internet Not Working on Your PC? Start With These Quick Checks

When the internet is not working on your PC, first determine whether the problem is with the computer, Wi-Fi connection, router, or internet service provider.

Before changing advanced network settings, try these quick checks:

Test the internet on another phone or computer.
Restart your PC.
Restart your modem and router.
Disconnect and reconnect to Wi-Fi.
Check whether Airplane Mode is turned off.
If possible, test the PC with an Ethernet cable.
Temporarily disconnect any VPN and test the connection again.

If other devices can access the internet but your PC cannot, the problem is more likely related to the computer's network adapter, drivers, DNS settings, Windows configuration, or security software.

Why Is Your Internet Not Working?

There can be several reasons behind internet issues, ranging from minor configuration errors to deeper network-related problems. Some of the most common causes include:

A faulty Ethernet or Wi-Fi adapter
Incorrect network settings
ISP (Internet Service Provider) outages
Router/modem issues
Software conflicts or malware
Outdated network drivers

Identifying the root cause is crucial to applying the correct fix.

How to Fix Internet Connection Issues: Step-by-Step Guide

1. Check Physical Connections

Before diving into software fixes, inspect your hardware. Ensure your Ethernet cable is securely plugged in or that your Wi-Fi is enabled. Sometimes, simply unplugging and re-plugging the cable or restarting the router can resolve the issue.

2. Restart Your PC and Router

This is the classic tech tip for a reason. Restarting your devices helps clear out temporary glitches that may be causing the issue.

Turn off your router and modem.
Wait for 30 seconds.
Restart your PC.
Turn your router/modem back on and wait until all lights are stable.

3. Run the Windows Network Troubleshooter

Windows comes with a built-in troubleshooter that can automatically detect and fix common internet problems:

Go to Settings > Network & Internet > Status.
Click on Network Troubleshooter.
Follow the on-screen instructions.

4. Check Network Settings

Verify if your PC is getting an IP address from the router:

Press Windows + R, type cmd, and press Enter.
Type ipconfig /all and check your IP address.
If your IP starts with 169. x.x.x, your PC is not receiving a valid IP. Reset your router and try again.

5. Update Network Drivers

Outdated or corrupted drivers can cause network problems. Here’s how to update them:

Open Device Manager.
Expand Network Adapters.
Right-click on your adapter and select Update driver.
Choose Search automatically for updated driver software.

6. Reset TCP/IP and DNS

Corrupted TCP/IP settings can be fixed using the Command Prompt:

Open Command Prompt (Admin)
Type the following commands one by one and press Enter after each:
- netsh int ip reset
- ipconfig /release
- ipconfig /renew
- ipconfig /flushdns
Restart your PC

7. Check for Malware

Sometimes, malicious software can hijack your network settings. Run a full scan using Windows Defender or a trusted third-party antivirus tool.

8. Disable and Re-enable Network Adapter

Go to Control Panel > Network and Sharing Center > Change adapter settings
Right-click on your connection and choose Disable
After a few seconds, right-click again and choose Enable.

PC Connected to Wi-Fi but No Internet?

Sometimes Windows shows that your PC is connected to Wi-Fi even though websites and online applications don't work. In this situation, the Wi-Fi connection may be active, but the computer may not be able to reach the internet.

Start by checking another device on the same Wi-Fi network. If every device is offline, restart the modem and router and check for an ISP outage.

If other devices work normally but the affected PC does not, try:

Forgetting the Wi-Fi network and reconnecting
Restarting the network adapter
Flushing the DNS cache
Renewing the computer's IP address
Disabling a VPN or proxy temporarily
Updating or reinstalling the network adapter driver
Running Windows Network Reset as a final software troubleshooting step

This distinction can save time because a PC connectivity problem and an internet service outage require very different fixes.

Advanced Fixes for Persistent Issues

Change DNS Server Settings

Sometimes switching to public DNS servers can resolve connectivity problems:

Go to Control Panel > Network and Sharing Center > Change adapter settings
Right-click on your active connection > Properties
Select Internet Protocol Version 4 (TCP/IPv4) > Properties
Choose Use the following DNS server addresses:
- Preferred DNS server: 8.8.8.8
- Alternate DNS server: 8.8.4.4

Check Router Settings

Make sure DHCP is enabled
Check if MAC address filtering is off
Ensure the firmware is updated

Contact Your ISP

If none of these fixes work, your ISP may be experiencing outages. Contact them for support.

Internet Works on Other Devices but Not Your PC?

If your phone, tablet, or another computer connects normally but one PC still has no internet access, the router or ISP may not be the real problem.

The affected computer could have an issue with its network adapter, Windows network configuration, DNS settings, drivers, security software, or other system settings.

Before replacing your router, purchasing a new Wi-Fi adapter, or making major Windows changes, it may be worth having the computer properly diagnosed.

Still Can't Get Your PC Online?

If you've tried the basic fixes and your computer still won't connect, MicroSec® can remotely diagnose Windows and software-related connectivity problems and help identify what's preventing your PC from getting online.

If the issue appears to be isolated to your computer, our remote computer repair service can help diagnose Windows, driver, software, and network-related problems without requiring an in-person visit.

What Is Causing Your PC Internet Connection Problem?

What You're Experiencing	Possible Cause	What to Check
Wi-Fi connected but no internet	DNS, router, ISP, or IP issue	Restart router, flush DNS, renew IP
Internet works on other devices but not PC	PC configuration or adapter issue	Drivers, adapter, Windows settings
PC keeps disconnecting	Weak Wi-Fi, driver or power settings	Signal, driver and adapter power settings
Ethernet works, but Wi-Fi doesn't	Wireless adapter or Wi-Fi configuration	Wi-Fi driver and adapter
No devices have internet	Router/modem or ISP issue	Router status and ISP outage
PC shows 169. x.x.x IP	DHCP/IP assignment problem	Router, DHCP, and network reset

FAQs

Q1. Why is my PC not connecting to the internet?

Your PC might not be receiving a proper IP address, the network adapter may be disabled, or your router may be malfunctioning.

Q2. How to fix internet connection problems in Windows 10/11?

Run the built-in troubleshooter, reset network settings, and update your network drivers.

Q3. What to do if the internet is connected but not working?

Flush DNS cache, change your DNS settings, or check if a firewall is blocking the connection.

Q4. Can malware affect my internet connection?

Yes, malware can interfere with your DNS or proxy settings. A full scan is highly recommended.

Q5. Do I need professional help to fix internet issues?

Not always, but if the issue persists after basic troubleshooting, professional help from MicroSec® can ensure a safe and effective resolution.

Q6. Why does my internet keep disconnecting randomly?

This can be due to weak Wi-Fi signals, too many connected devices, outdated router firmware, or power-saving settings on your PC. Try updating the router, disabling power-saving, and limiting device connections.

Q7. How do I reset network settings in Windows 10/11?

Go to Settings > Network & Internet > Advanced network settings > Network reset. This will remove and reinstall all network adapters. Reconnect to your Wi-Fi afterward.

Q8. How do I change DNS settings to fix internet issues?

Go to Control Panel > Network & Sharing Center > Change adapter settings. Edit the properties of your network and set DNS to 8.8.8.8 and 8.8.4.4 (Google DNS). This often fixes slow or failing connections.

Q9. Why am I connected to Wi-Fi, but there’s no internet?

This usually means the router isn’t connected to the internet. Restart your modem/router, check other devices, and disable VPN or proxy if enabled. If the issue persists, call your ISP or contact MicroSec®.

Q10. How can I avoid frequent internet problems on my PC?

Keep your drivers and OS updated, use a reliable antivirus, and reboot your router regularly. For ongoing support, consider a remote IT plan with MicroSec®.

Q11: Why is my PC having internet issues when other devices work?

If other devices are online normally, the issue may be isolated to your PC. Common causes include a network adapter problem, outdated drivers, incorrect DNS or IP settings, VPN or proxy configuration, or Windows network corruption.

Q12: How do I fix connectivity issues on my PC?

Start by restarting the PC and router, reconnecting to the network, checking the network adapter, updating drivers, flushing DNS, and renewing the IP address. If those steps fail, Windows Network Reset may help restore the network configuration.

Q13: Why is my PC not connecting to the internet even though I have internet?

If your internet works on other devices, your ISP connection is probably active. Check the affected PC's Wi-Fi or Ethernet adapter, network drivers, DNS settings, VPN or proxy settings, and Windows network configuration.

Q14: How do I fix no internet access on a PC?

First, determine whether other devices have internet access. If they do, restart the PC's network adapter, reconnect to Wi-Fi, flush DNS, renew the IP address, and update the network driver. If every device is offline, check the router or contact your ISP.

Still Having Internet Problems on Your PC?

If you've tried these troubleshooting steps but your internet connection still isn't working, the problem may require a deeper look at Windows, network drivers, DNS settings, or other software configurations.

MicroSec® provides secure remote computer support to diagnose computer and connectivity issues without requiring you to take your PC to a repair shop.

👉 Get Remote Computer Repair Help.

Prefer to speak with us about the problem first? Contact MicroSec® and tell us what's happening with your PC. Our team can help you understand the issue and recommend the appropriate next step.

✍️ Written by Jude Sarkar

Founder & Cybersecurity Consultant at MicroSec®

Jude Sarkar is the founder of MicroSec®, a BBB Accredited and fully insured U.S.-based remote IT support and cybersecurity company. With over a decade of hands-on experience in malware removal, virus clean up, and scam prevention, Jude helps homeowners, seniors, and small businesses stay safe online through trusted, human-first remote support. For more info,

please visit: https://www.microcybersec.com/about-us