Process Blocked task manager, regedit, msconfig,various keywords

this week is very bad for my pc.i dont understand what is wrong with my computer all main posses got stuck some how no virus detection no spyware waring.also Task Manager is not working as i trying to open it shows it self with gray shadow and then stuck. simple not possible to go for "End Process" button

also problem to start my Mozilla I received the word virus, and the moment I clicked the submit button my browser closes. So I load up Internet Explorer, just to check but instantly it is also got closed. Spyware Blaster, and Spybot Search and could not find anything. please help me and provide me some solution. thank you.

i think it is virus problem and you dont have updated version of your antivirus protection. so try to update the product and scan hope it will work ..

well looking critical condition problem is no any suspicious detection so start taking backup of your important data on cd/dvd. and try to get some help from here http://www.spywareremove.com/removeBegin2Search.html