BleepingComputer.com: Help with resolving a DNS error issue

I recently had a pretty major virus fixed thanks to help from this website: http://www.bleepingcomputer.com/forums/ind...p;#entry1677528

Following the fix, I have not been able to access the internet. My virus specialist has identified it as a DNS issue, but we have not progressed past that point in terms of fixing, so I was hoping to get some additional input from this forum. Here is what I can tell you about the issue:

- when I try to go on IE or Firefox, I get the standard "cannot open this page" error
- I am currently on a home wireless network, but the problem persists whether going through a wired or wireless connection. I have another computer on this wireless network (one I am typing from) that works fine on the wireless network and wired from the modem, so I think we can rule out the modem/router.
- The broken computer has a valid IP address (192.168.1.x) and shows as having a strong connection (it's a small apartment). When I open up the status of the connection to look at the packets, generally the computer is receiving about 5% of the packets sent.
- I have tried flushing the DNS.
- I can ping the router, but I cannot ping google.com.
- I can open up IE and reach google by typing http://216.239.59.147 in the address bar.

Thanks in advance for any help/suggestions you can offer. Let me know if you need any additional info. I'll try anything!

Try some basic steps....

Turn off computer. Disconnect router, and modem from power source for 30 seconds. At the same time disconnect signal cable as well.
Power them back on.
Restart computer.

If that doesn't work, bypass router, and connect computer straight to the modem.

If that doesn't work...
Go Start>Run (Start search in Vista), type in:
cmd
Click OK (in Vista, while holding CTRL, and SHIFT, press Enter).

In Command Prompt window, type in following commands, and hit Enter after each one:
ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew

Restart computer.

If that doesn't work...
Go Start>Run (Start search in Vista), type in:
cmd
Click OK (in Vista, while holding CTRL, and SHIFT, press Enter).

At Command Prompt, type in:
netsh int ip reset reset.log
Hit Enter.
Type in:
netsh winsock reset catalog
Hit Enter.

Restart computer.


If that doesn't work...
Download, install, and run WinSockFix: http://www.softpedia.com/get/Tweak/Network...inSockFix.shtml (doesn't work in Vista)
Restart computer, and check again.

If that doesn't work...
Download Dial-A-Fix (DAF) (doesn't work in Vista):
http://wiki.lunarsoft.net/wiki/Dial-a-fix#...2C_and_articles

Have XP CD available in case DAF needs a file. Likely not!

Check all boxes on the screen (clear any restrictions if it shows any)
Then click GO!

When the entire page is finished click the HammerHead at bottom to go to the second DAF page.

Here, one at a time, do the below:

Reinstall BITS
Reinstall Windows Firewall
Repair Permissions
Reset networking

Watch for any File not found or other errors and make note as this may lead to the fix!

Restart computer.

Hi and thanks a ton for all your advice so far.

I ran through every fix one by one and the issue is not resolved.

When I ran the DAF, I got several error messages stating that the following files were either not registerable or file corrupted, and/or the file is not DLLInstall-able or the file is corrupted:

C:\WINDOWS\System32\iesetup.dll ; imgutil.dll ; inseng.dll ; mshtml.dll ; msrating.dll ; occache.dll ; pngfilt.dll ; webcheck.dll

Any ideas?

Go Start>Run ("Start Search" in Vista/7), type in:
sfc /scannow
Click OK (hold CTRL, and SHIFT, hit Enter in Vista/7).
Have Windows CD/DVD handy (with Vista/7, most likely, you won't need it).
If System File Checker (sfc) will find any errors, it may ask you for the CD/DVD (rarely in Vista/7 case).

I followed your instructions and no error screens popped up or anything. The problem persists.

Go Start>Run, type in:
cmd
Click OK.

At command prompt, type in:
Regsvr32 iesetup.dll
Press Enter

Repeat same Regsvr32 command for other files listed by DAF:
imgutil.dll ; inseng.dll ; mshtml.dll ; msrating.dll ; occache.dll ; pngfilt.dll ; webcheck.dll
Press Enter after each command.

Restart computer.

After each command I received the following error message: iesetup.dll (or whatever file I was choosing) file was loaded, but the DLLRegisterServer entry point was not found. File can not be registered."

On restart, issues persist.

I believe, some of your system files are corrupted.

Try repair installation: http://www.geekstogo.com/forum/How-to-repa...ws-XP-t138.html

I'm looking everywhere and can't find my XP Cd. is there any other way to fix this?

Ask around. Borrowed CD will do. Just make sure, it's the same XP version, Home for Home, Pro for Pro.

A bit of a resurrection of an old topic here...

I finally found an XP CD but of course it is the wrong version (its Home and the computer is Professional). I have no idea if this is relevant, but on the affected computer I am able to boot from Windows Recovery Console - would I be able to reinstall the DLLs I need for IE from using the Recovery Console rather than using the XP CD? I have been losing my mind trying to fix this computer for the past couple months. I finally got rid of the infection and now I can't access the internet! It's very frustrating. Any help is appreciated.

Unfortunately, I don't know how it could work, since we have no idea what files are missing/corrupted.

If nothing else works, I'd probably back up your data and go for clean reinstall.
Sometimes, with serious infections, this is exactly what happens. No matter how clean of malware your computer is, it will never be itself anymore unless you perform full clean install.

Wouldn't a full, clean install require the XP CD, though? Or could this be done through the Recovery Console? Sorry for the (likely) idiotic questions - first time I've had to deal with something like this...

You can reinstall Windows through recovery partition (not console). It'll return your computer to its original state.
Be aware, all your data will be lost.