No internet or system restore - format C needed?

It started with a conflict between Chrome and Comodo firewall. Tried uninstalling together with other security programs down to just having Windows firewall. But still Explorer "cant find the page" and all system restores are gone or wont work. Have tried solutions all day, do I really have to format and reinstall the whole computer?

Hello Veronika,

Short answer could be either, could you fill in yours specs a bit more, Make/model, what AV, any optimiser progs.

First step download Malwarebytes (uncheck the 30 day trial), run a full scan.
As youv'e got a desktop do you still have the OS disk?.

Roy

Yes, I still have the OS Cd. But I´m looking for easy solutions, and with just one windows-computer with no Internet I´m having trouble downloading... I´m investigating getting and moving programs on usb:s, but no success yet. Have tried Comodo, Zonealarm and Windows firewall. Avast, Forticlient and Windows antivirus. OI:s security programs + CCleaner and Revo uninstallers cleaning everything. Win 7 64. All on a SSD-disk, Intel i7, and good updated computer.

Try Safe Mode with Networking.

Run in cmd:

Code:

ipconfig

Then ping your own IP, gateway, 8.8.8.8 and google.com -- are you getting replies or timed out?

Thanks, I got Internet working in safe mode. Downloaded and ran Malwarebytes without any big faults. Though I´m used to working with computers, I need a step-by-step explanation with: "Then ping your own IP, gateway, 8.8.8.8 and google.com -- are you getting replies or timed out?". The internet works in safe mode, so the solution shouldn´t be far away.

If Gokay's suggestion does not give you any luck.

Back-up your personal files/pictures/etc to a USB/disk, then go to tutorials section and search for Repair install, Follow Brinks instructions there, (thats why i asked about OS disks).

Roy

Rats typing this during your last post

Download firefox see if that works.

Roy

Try IE (no Add-ons) - Internet Explorer (No Add-Ons) - Open. Do you have any other browsers? Tried with them?

Try running in elevated cmd:

Code:

netsh winsock reset

Also try a clean startup - Troubleshoot Application Conflicts by Performing a Clean Startup

If it still fails, then in cmd:

Code:

ipconfig

it should show something like (numbers will be different and it will have more lines of info):

Code:

   IPv4 Address. . . . . . . . . . . : 192.168.0.105
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1

Once you know the addresses, also run in cmd:
ping yourIPaddress

Code:

ping 192.168.0.105

ping gateway

Code:

ping 192.168.0.1

Ping 8.8.8.8 and google.com (2 separate commands):

Code:

ping 8.8.8.8
ping google.com

Make note of each, which one fails to reply back?

They all reply back and there´s internet connection, but both Explorer and Chrome can´t find a web page. Tried right-clicking my connection for a diagnose in control panels networks - "Your computer is right configured but the unit (DNS-server) wont answer".

Did you try running in cmd: "netsh winsock reset" yet?