Member Avatar for harry.knuckles.79

Hello,
Today I was working on my home Pc. As I work my 2nd job from home. I was working away and clicked some random news site and all of a sudden Mcfee says they have blocked a trojan, and then get a little box pops up wanting me to approve windows to run something I click no and keep working. The box keeps popping up. <br Mind you the

 `internet is working fine at thi

internet is working fine at this point. I restart my PC in safe mode with networking, to run a virus scan. I notice my internet now is not working. I restart in normal mode, and to my horror the internet dose not work there either. I really know very little about PC's so any help would be great. I did try system restore but it froze up after a hour so clicked restart to take me back to safe mode. I'm running a virus scan and malwarebytes scan now. But I'm stressing out I have work that has to be done asap, and I really dont want to go buy a new PC if I dont have to.As of now I have no internet and my Mcfee says buffer over flow checking off.... Thanks alot all.

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  • Latest Post Latest Post by CimmerianX

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Good call by to try Safe Mode with Networking. Given an AV alert followed by a disappearing antivirus and lost network access (as reported by ), the next steps should be a short, ordered checklist: confirm the network stack and configuration, remove common interference (malicious proxy/hosts entries), then run offline malware cleaners if networking stays broken.

Run these basic checks from an elevated Command Prompt (restart after the winsock reset):

ipconfig /all
ping 127.0.0.1
ping <gateway IP from ipconfig>
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
netsh int ip reset
netsh winhttp reset proxy

What to look for: a valid IP/gateway from ipconfig, successful loopback and gateway pings, and a reboot after netsh winsock reset. netsh winhttp reset proxy clears malicious proxy settings that malware often installs.

If that doesn't restore connectivity, check these local items (Safe Mode or offline where appropriate): verify the hosts file at C:\Windows\System32\drivers\etc\hosts for injected entries; confirm Network Adapter status/driver in Device Manager; inspect Internet Options → Connections → LAN Settings for an unwanted proxy; and ensure services like DHCP Client and DNS Client are running (services.msc). Copy important personal files to external media before deep repairs.

For cleanup when the infected machine cannot download updates, use a clean PC to fetch reputable offline tools (blocker/stopper like RKill, Malwarebytes full installer, rootkit scanners, or a vendor rescue ISO/USB such as a rescue disk or Windows Defender Offline). Boot the rescue media, scan, remove threats, then recheck the network stack. If malware persists or critical system components are damaged, a repair install or clean OS reinstall is a reliable final step; replacement hardware is rarely necessary.

Member Avatar for CimmerianX

Try 'Safe Mode with Networking' this should load up a very clean windows yet have connectivity. If this works, then something got loaded on your machine that is interfering. You could use MSCONFIG to turn off all startup items, then turn 1 on, reboot, test, turn on the 2nd, reboot, test, etc.... until you find the bad application....

Malwarebytes is the way to go right now. Use safe mode with network to load MWB to get the full update before scanning.

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