Today I had a phone call from Compstep telling me Microsoft had reported that my computer had a Virus and was slow and kept sending error reports to MS. They then showed me 100`s of virus reports including a virus in AVAST ans XP being reported from the control panel Antivirus none of which could be deleated. I have done a scan and can find no virus. The outcome was they wanted to upgrade my computer to Win 7 at a cost of GPB185 under remote control. I rejected their offer but wonder if I do have a virus. 1 person needs an answerI do too

That call was a scam, and you did the right thing by rejecting it. No legitimate company makes such phone calls. For details of the scam (or a similar one), please see Warning: Security related E-Mail Hoax stating that network is infected .Boulder Computer Maven Microsoft Most Valuable Professional

I recieved the same call today again they wanted to charge £185. I use windows Vista and they told me it was because my edition was too out of date. I was fortunate enough not to except their offer, and I have done everything in my power to scan and clear all from my compter. I have followed you link about the E-Mail. Thank you

You're welcome! Hooray for you for not falling for that scam.Boulder Computer Maven Microsoft Most Valuable Professional

Microsoft will NEVER call user unless they ask to do so. This kind of call or fake and also note that Microsoft malware removal service is free for now. You should ignore this type of calls.