out.exe is a win32 trojan backdoor

2 days ago i have repaired my costumer laptop. The problem is his computer processor is so hot. I try to figure out what makes his computer become hot. First i thought its problem on processor fan but after i checked, i saw the fan is running in good condition. I try to disable all application that running on startup menu and the result is good.. i checked again what is running on startup menu and i find a file that i never see before this.. that file are renamed as "out.exe" and its located on C:\WINDOWS\out.exe.

How do i know this file makes that processor become hot and hang?
The first thing i do is i try to find from where this file come. i borrow my costumer thumb drive and i see there are an autorun file that running \cold\hott\out.exe in that thumb drive. automatically i said this is bad file and its a virus.

How do i remove this virus?
If your laptop become really hot and always hang try to follow my tutorial.

First double click 'my computer' icon on your start menu.
Click Tools -> Folder Option -> Views and make sure you show your hidden files by clicking on 'show hidden files and folders".
Then go to C:\WINDOWS\ and find out.exe file
If you see this file in your windows folder, meaning you have got this virus. You can't delete this virus directly because this file is running.
To remove this virus, go to start menu and click 'run'.
on run box, please type 'msconfig' and click startup tab.
Find the word out.exe and uncheck it.
reboot/restart your computer and you can delete out.exe file after restarted.
After you delete that file, you can see the result.