Viruses and Malware
In ResNet the most common problems we see are computers infected with fake Antivirus Malware. In most cases fake Antivirus programs won't let you do anything until you pay for the product. Whatever you do, DON"T GIVE THEM YOUR CREDIT CARD! It may seem like a quick fix, but in reality payment does not resolve the problem. Whatever amount of money that they want to charge you is only going to be the start of the pain they'll put you through. Many times that charge will come out, and then they might charge you again and again until your credit line is maxed or you've overdraft on your bank account.
What to do when you get a fake Antivirus:
In the great words of Douglas Adams, "Don't Panic". If you have a USB stick available go to a clean machine, like a lab node and download Malwarebytes, and copy to your USB stick. Boot your computer into "Safemode with Networking" by pressing F8 after post. Place the USB stick that you copied Malwarebytes over and try to install it. Hopefully the install will work. If the install does not work, try going to the control panel and try to make a new account that you can work from, you might want to name it a variant of your account since you might have to move all your information over after you clean up the Malware. Once Malwarebytes is installed let it update, if Malwarebytes can't update and you are running from a freshly made account please bring your computer down to ResNet/Service Center during business hours and we will help you. We do this every day and are quite good a removing Malware.
How to keep it from happening again:
A fully patched Windows 7 machine running a current Antivirus is very hard to get through for most Malware and viruses. Run your updates regularly and be smart, in many cases a Social Engineering Attack was used to get the Malware on your computer in the first place.