Cannot access the Internet

Hi, I've got a problem that I was hoping someone could help me with...

It all started when somehow, my dad's computer got infected with "Malware Doctor". It appeared immediately on start-up and nearly rendered the PC inoperable. It showed that it was doing some kind of scan, but could not be killed. Internet connectivity was disabled. It disallowed the Task Manager from appearing, and prevented the PC from booting into safe mode (it showed an empty blue screen and Ctrl-Alt-Del did nothing). It also slowed down the PC immensely. With difficulty, I eventually managed to run a program called "FixPolicies" and managed to get into safe mode properly. I then ran "SUPERAntiSpyware" and "combofix", and this eventually seemed to remove the malware and allow XP to load successfully without any malware appearing. (I really wasn't sure what I was doing at the time).

The Internet connection was also restored but unfortunately, this was only temporary. Some other anti-malware tool that my dad was running reported another infection (I was not there at the time, unfortunately), and it proceeded to remove the infection. A side effect was that the Internet connection was hosed again.

So this is where we are today. XP appears to be running OK, but there is no network connectivity. There are two "Network Connections" in the Control Panel, and both are completely empty. All of my network adapters are disabled in the Device Manager. I tried various tricks to restore my network connection, but nothing has worked, so I suspect there are some remnants of malware that are affecting it, still.

I then stumbled across this site, and ran the recommended battery of tests. The only thing that I couldn't get to work was RootRepeal, which keeps crashing with a blue screen of death. I did also try to restore my network connections by using SuperAntiSpyeware and using the "Repair broken Network Connection" feature, but that had no effect. Apart from the network connection problem, I see no strange malware symptoms, and most of the tools I'm running are showing a clean system. I did quite a few searches on Google before I got here, and I can't find an obvious solution.

Anyway, any help would be very much appreciated. I've posted all my logs as instructed on this site. Please suggest what I should try.

Many thanks in advance!

 

Sorry. I did actually collect and have the logs when I first posted, but obviously I did something wrong with attaching them. Here goes again. (Just a reminder: I have no logs from RootRepeal as it crashes on me).

By the way, I tried restoring my network connection by using the Winsock XP Fix 1.2 tool that everyone seems to be having luck with, but it didn't resolve my problem at all. Also, I tried the "netsh int ip reset resetlog.txt" command but it failed, too. The Network Connections list is still empty. If the TCP/IP stack is corrupted or gone, I have no idea how to restore it. I'm still wondering whether it's malware that's blocking it...