|thanks for your link, ignys, and thanks for your post xpertise.|
you may be right re spyware doctor, though wikipedia says it got the "PC World Best Buy award in the October 2007 " and I thought its reviews were good - better than some others.
anyway I have a bigger problem now - I did install the premium spyware and try and remove security tool.
I then turned off my PC and turned it on later fine.
So probably its unconnected to SD but now my PC *won't turn on" - at least it sounds like its on but the monitor is blank saying it gets no signal - its a Hannspree monitor that communicates with the PC during bootup - I wonder if the malware has corrupted a monitor driver or whether with all the recent rough treatment some components has just failed.
I think it might be beyond me now even with the help of you kind experts - I might try and take it to a PC repair shop this w/e if by some miracle it doesn't spark into like. I have had the PC 2 years so its not v old or new - maybe I canget a Windows 7 PC next time