login then just wallpaper ? HELP

i had alcomrg.exe windows cannot find file when xp booted to desktop
so i ran malware antibytes it didnt find the file, so i loaded a startup manager
to remove the entry alcomrg.exe, i also turned off system restore, then rebooted i got to login password typed it in then i could hear the xp start music
windows loading personal settings then alli got was a blank screen wallpaper
and nothing else, i tried alt ctrl del but when i did that i got task manager disabled by administrator, then i rebooted into safe mode used cursor up to boot into safe mode it then took me back to login screen i put in password
then it went back to safe mode black screen and alli can see is safe mode in the four corners and no desktop, i have hirens boot cd that has mini xp is there
aything i can do please help