virus or spyware attack on system booting part

Hello to all Experts Professionals, my notebook got some malascious exe file in temp folder of local folder, my norton antivirou 10 corporate warned about some unvalid exe file (password mess.exe)in the temp and also removed some temp files, after that i got message in my DOS prompt window (which automatically poped up) that some file is copied in my boot system . after that i my system held up, i restarted the system, it loads windows normally but after getting admin pssward thr. log on windows,   a black  screen displayed for some seconds and then window displays desktop. after some seconds system becomes slower to halt, before system goes to halt when i try to open task manger, it denys to open by displaying mess that task manager is disabled by admin. when system is halted i press alt,cont,del there displaly messg on top of log on window that virus alert is on, three shortcuts are also installed on desktop i.e. Malware Defender, Protect You Privacy, System Error Fixer.   Earlier i had removed some malacious files like MicroAv.exe, Ctfmon.exe from c\window\system32 folder and yur1ce.exe from window prefect folder, when i restart computer in safe mode a memory dump is initialized and afte that again prompt for to start computer. is there any option to avoied the formating the c drive and remove this malicious spy ware  Start Free Trial