.exe files automatically disappeared??

Hi :)
currently I experiencing a problem .. that's my .exe files auto disappeared from my computer ..
I don't know why .. I tried to download it again , but with 0 bytes .. When I click on the files it just pop out this msg '' is not valid win32 application .
So Im using my father lap top to download the files and copy to my USB pend to transfer the file , but once I open my USB folder my .exe files automatically disappeared ..
I wondering what happened ..

Sounds like a virus....run Malwarebytes Anti-Malware if possible. If all your .exe files were gone, you wouldn't be able to run Windows at all.

There is another possibility.
Possibly something mischevious has changed the settings on your computer.
Are you sure the programs are gone, or just hidden?
If the latter, have a look here.

First. Open , in windows explorer, Tools - Folder Options - View. Make sure you have the option "Show hidden files..etc, ticked. -- Apply.
After this, if you can now see the missing files, right click a couple and check properties, untick the option "Hidden".

You may need a reboot after the first step.

All failing, start a new account using the Global adminstartor. If you are not familiar with that, there is a tutorial on this site. Try the above again.