First, I would want to thanks Geekstogo that I can post my problem here and consult with expertise

My PC is infected by Virus, today I format and installed new Windows, change from 7 to XP because of some reason, and when I want to download Anti Virus for my PC, I was unable to open the anti virus site, its clearly shown that something is blocking it. Because when I click on the Anti Virus site, it will automatically and fast error showing, its not loading yet.
Also my Windows is not updating and I can't open Microsoft.com.
I searched Google about this problem and found a lot of Guide, and downloaded Malwarebytes, but the problem is still unfix.
So I came to here to ask for support.
Anyone please kindly help me,
Thanks =)
Update: I tried to Scan it again and remove the selected virus by MalwareBytes now I can open up Anti Virus Site also Microsoft.com
But I just feel that my PC is acting wrong or having problem, because my Graphic Driver is error when I try to open
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Microsoft Visual C++ Runtime Library
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Runtime Error!
Program: C:\WINDOWS\system32\igfxcfg.exe
R6002
- floating point not loaded
---------------------------
OK
---------------------------
also I cant open my Sound Driver "Realtek HD Sound Effect Manager", nothing happen when I click it.
Is there anyone can help me fix my problem or helping me to find any spyware, malware or virus from my PC?
So I can feel good and safe again.
Update 2:
I got another problem, when I click to open my Kingston Flash Disk, I got error message
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RUNDLL
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Error loading .\RECYCLER\S-5-3-42-2819952290-8240758988-879315005-3665\jwgkvsq.vmx
The specified module could not be found.
---------------------------
OK
---------------------------
So I have to open by right click and select 'open'
Anyone please kindly help me to solve whole problem from my PC.
Thanks

Edited by Route Port, 04 April 2011 - 12:23 PM.