|Hi Thanks for that reply.|
I didn't test your advice anymore because I found the solution before I read your reply.
My computer was infected by the famous confickr worm C. Microsoft Support does not give any useful responses to questions about this particular problem so I would like to share here for others to try out.
I believe that your suggestion was correct. You do need to use a tool. I don't know if I could have downloaded from Kaspersky though because I could not get into any anti virus website in the first place,or download from cnet or similar sites. But thanks to websites like this and information like yours people like me find solutions. Super.
What I did was similar to your advice.
1. Go first on Safe Mode. Press F8 repeatedly when Windows XP is still reading or loading.
2. Then when is Safe Mode, go to the Microsoft website. You will not be able to download using the Microsoft update express being in Safe Mode but you can download manually.
3. Download the latest Microsoft Malicious Software Removal Tool.
4. Run the tool as soon it has downloaded. It will start to scan the computer like an anti-virus software.
5. It will take a while but it will indicate if there is an infection found . It will also indicate all the adware, malware it finds and will say if these have infected your computer. Apparently, it doesn't always infect as the tool will indicate"not infected."
6. The tool will remove the infection immediately and when you click the view details you will see what type of infection it was.
Mine was the confickr worm. Terrible worm.. it will not make you enter Microsoft or anti-virus websites at all. It will even indicate that the anti-virus cannot detect an internet connection when you are trying to download from cnet.
I downloaded manually all the other updates I could find in Microsoft, then I went out of Safe Mode then viola! I could enter Microsoft office and finally got to download an anti-virus software. I chose Kaspersky.
I think there was already a confickr worm lurking when I was using AVG free so I decided against using it again.
Thanks. I hope, to all the not so techies like me, this will help.