Computer Hijack Help

[yamangold]

Looking for some help on getting control of my computer back!!  I am currently getting fake security warnings and am unable to run ANY program with the message "application cannot be executed".   I was trying to install some removal tools but safe mode will not let me, and I can do nothing after a normal boot.  Any help/knowledge is greatly appreciated!
-Jeff

[Dr Jay]

Please reboot to Safe Mode with Networking (tap the F8 key just before Windows starts to load and select the Safe Mode with Networking option from the menu).

Please visit this webpage for a tutorial on downloading and running ComboFix:

http://www.bleepingcomputer.com/combofix/how-to-use-combofix

See the area: Using ComboFix, and when done, post the log back here.