1. Shutdown and remove the hard drive and connect it to another computer as a non-bootable drive

If your computer is hacked you need to shut it down to prevent further damage to your files. After you have powered it down, you will need to pull the hard drive out and connect it to another computer as a secondary non-bootable drive. Make sure the other computer has up-to-date anti-virus and anti-spyware. You should probably also download a free rootkit detection scanner from a reputable source.

Consider purchasing a USB drive caddy to put your hard drive in to make it easier to connect to another computer. If you don't use a USB caddy and opt to connect the drive internally instead, make sure the dip switches on the back of your drive are set as a secondary "slave" drive. If it is set to "master" it may try to boot the other computer to your operating system and all hell could break loose again. Take your computer to a reputable local PC repair shop if you don't feel comfortable removing a hard drive yourself.

2. Make a complete backup of your system

Once everything is in its normal condition you should do a complete backup so that if this ever happens again you won't spend as much time reloading your system. Using a backup tool that creates a boot-able hard drive image as a backup will help speed up future recoveries to a huge extent.

3. Reset your passwords

Consider changing the password on the affected service, and any others that use the same or similar password. And don’t reuse passwords. You should be changing your passwords from time to time as a part of routine maintenance. But if you’ve just been hacked, it’s now more urgent. This is especially true if you reuse passwords, or use schemes that result in similar passwords. “Password reuse is one of the great evils and its very hard to prevent.

Sites can set up password requirements — for example a character length or that a password include symbols and numbers — but they cannot force you into not reusing the same or similar passwords. “It’s very common for people to use similar or the same password but it’s very unusual for people to realize that it creates a liability for them to do it and that they need to change their password after they’ve been hacked.” - See more at: http://trendymediablog.com/2014/09/10-things-to-do-after-been-hacked/

Noted...PS: I didn't finish reading cos I didn't have the time to click that link. Also, its 'being' not 'been'