Written by
Jude Sarkar
How to Fix Internet Connection Issues on a PC
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 guide, 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 connection 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 using an Ethernet cable.
- Temporarily disconnect any VPN and test the connection again.
Quick Diagnosis
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. Identifying the root cause is crucial to applying the correct fix.
Wi-Fi or Ethernet Adapter
A disabled, malfunctioning, or improperly configured network adapter can prevent your computer from connecting.
Incorrect Network Settings
Problems with IP addresses, DNS settings, proxies, or Windows network configuration can interrupt connectivity.
ISP Outage
Your computer and router may be working normally while your Internet Service Provider is experiencing an outage.
Router or Modem Problems
Temporary router errors, DHCP problems, or modem issues can prevent one or all devices from reaching the internet.
Software or Malware
VPNs, security software, malware, unwanted programs, and network filtering software may interfere with connectivity.
Network Drivers
Outdated, corrupted, or incompatible network drivers can cause connection failures or frequent disconnections.
How to Fix Internet Connection Issues: Step-by-Step Guide
Check Physical Connections
Before diving into software fixes, inspect your hardware. Ensure your Ethernet cable is securely plugged in or that Wi-Fi is enabled.
Sometimes simply unplugging and reconnecting an Ethernet cable or restarting the router can resolve the problem.
Restart Your PC and Router
Restarting your computer and network equipment can clear temporary network glitches.
- Turn off your router and modem.
- Wait approximately 30 seconds.
- Restart your PC.
- Turn your router and modem back on and wait until the connection lights stabilize.
Run Windows Network Troubleshooting
Windows includes built-in network diagnostic tools that can help identify common connectivity problems.
Depending on your version of Windows, open Settings > Network & Internet and look for the available network troubleshooting or diagnostic options.
Windows Versions Differ
Microsoft has changed the location and naming of some network troubleshooters between Windows 10 and Windows 11, so the exact menu shown on your computer may vary.
Check Network Settings
Check whether your PC is receiving a valid IP address from your router.
Press Windows + R, type cmd, and press Enter.
Then enter:
ipconfig /all
Review the IP information for the network adapter you are currently using.
Seeing a 169.254.x.x Address?
An IPv4 address beginning with 169.254 often means Windows automatically assigned itself a link-local address because it did not receive an IPv4 address from a DHCP server such as your router. Restarting the router, reconnecting the adapter, and investigating DHCP connectivity may help identify the problem.
Update Network Drivers
A corrupted or incompatible network adapter driver can cause internet connectivity problems.
- Open Device Manager.
- Expand Network adapters.
- Locate your Ethernet or Wi-Fi adapter.
- Right-click the adapter and select Update driver.
- Follow the available driver update options provided by Windows.
If Windows cannot find an appropriate driver, you may need to obtain the correct driver from your PC or network adapter manufacturer's official support website.
Reset TCP/IP and DNS
Network stack or DNS cache problems can sometimes be resolved using Command Prompt.
Open Command Prompt as Administrator and run the commands one at a time:
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
After the commands finish, restart your computer and test the connection again.
Check for Malware
Malicious or unwanted software can sometimes modify network, browser, proxy, or DNS settings and interfere with internet access.
Run a full security scan using Windows Security or another reputable security product you trust.
Disable and Re-enable the Network Adapter
Restarting the network adapter can help when Windows has temporarily lost communication with it.
- Open your Windows network adapter settings.
- Locate the active Wi-Fi or Ethernet adapter.
- Disable the adapter.
- Wait a few seconds.
- Enable the adapter again and test your connection.
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 wireless connection to the router may be active, but the computer may still be unable 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 whether your ISP is experiencing an outage.
If other devices work normally but the affected PC does not, try:
- Forget the Wi-Fi network and reconnect to it.
- Restart the network adapter.
- Flush the DNS cache.
- Renew the computer's IP address.
- Temporarily disable a VPN or proxy and test again.
- Update or reinstall the network adapter driver.
- Consider Windows Network Reset after less disruptive troubleshooting steps have failed.
PC Problem or Internet Outage?
This distinction can save significant troubleshooting time. A problem affecting only one PC and an internet outage affecting every device require very different solutions.
Advanced Fixes for Persistent Issues
Change DNS Server Settings
If DNS resolution is failing, testing a reputable public DNS service can help determine whether your current DNS configuration is causing the problem.
For example, Google Public DNS IPv4 addresses are:
Preferred DNS server: 8.8.8.8
Alternate DNS server: 8.8.4.4
You can configure DNS through the properties of your active network connection. Record your original settings before making changes so they can be restored if necessary.
Check Router Settings
If you manage your own router and are comfortable changing its configuration, review its network settings.
- Confirm that DHCP is configured correctly.
- Check whether device access controls are blocking the PC.
- Review the router's internet/WAN connection status.
- Check whether firmware updates are available from the manufacturer.
Be Careful With Router Changes
Router addresses, usernames, passwords, and settings vary by manufacturer and ISP. Avoid changing settings you don't understand, and don't disable security features simply to restore connectivity.
Contact Your ISP
If every device in your home or office has lost internet access and restarting the network equipment doesn't help, your ISP may be experiencing an outage or connection problem.
Contact your Internet Service Provider or check its service-status information before making major changes to Windows.
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, VPN, proxy, or other system settings.
Don't Replace Hardware Too Quickly
Before replacing your router, purchasing a new Wi-Fi adapter, or making major Windows changes, it may be worth having the affected 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, and renew the IP address |
| Internet works on other devices but not PC | PC configuration or network adapter issue | Drivers, adapter, VPN/proxy, and Windows network settings |
| PC keeps disconnecting | Weak Wi-Fi, driver, interference, or power settings | Signal strength, driver, and network adapter power settings |
| Ethernet works, but Wi-Fi doesn't | Wireless adapter or Wi-Fi configuration | Wi-Fi adapter, wireless driver, and saved network configuration |
| No devices have internet | Router, modem, or ISP issue | Router/modem status and possible ISP outage |
| PC shows a 169.254.x.x IPv4 address | DHCP/IP assignment problem | Router, DHCP connectivity, adapter, and Windows network configuration |
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.
Need Professional Help?
Our technicians can remotely investigate Windows, driver, DNS, software, and network-related issues and help identify what's preventing your PC from connecting properly.
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 cleanup, and scam prevention, Jude helps homeowners, seniors, and small businesses stay safe online through trusted, human-first remote support.
For more information, please visit About MicroSec®.