For the past couple days I have not been able to OPEN any explorer windows. For example if I open up my documents the window appears and I can see my desktop through the window but takes up to a half hour to actually open. Then If I click on something the little circle appears as if its loading to open it and sometimes it will open after a fifteen min. and other times it will not open at all.
 I have ran 4 different trojan virus etc. software and came up with a NOTHING. It said my system is clean and I have no idea what to do. If I go to the start menu to do a system restore in my accessories a little magnifying glass just sits on the side of the option and does not allow me to open anything. I opened everything in safe mode to do a system restore but it said the only restore point was from yesterday...I feel like going mad. 

All of my photos and files from 3 years are on my PC and I am fearful to lose them. My internet seems to be working as usual as are programs. I feel at a loss and am trying to move my valuables onto my external hard drive but again the windows are not even opening for me to do so. PLEASE HELP. I don't have a clue what do do NEXT..... thanks in advance Quote

I have ran 4 different trojan virus etc. software and came up with a nothing

What led up to this (new sw, hw, virus, etc)? These thing don't just happen spontaneously
i just bought my laptop used and it came with all SORTS of problems..this being ONE of them...so i dont know what started it...?