Anytime you’re about to consider an issue a real IT support problem and call your computer consulting vendor, always reboot first!
First, exit out of whatever files and programs that you're working on. Then, run through a Shutdown and Restart sequence to reboot your computer.
If you suspect your computer problem involves something hardware-related, such as with your network card, modem, mouse, keyboard or sound card, you should even go one step further, before calling your computer consulting experts.
Go to your Start menu. Next, shutdown your PC. Then turn the power off for a minute or so... if you’re computer didn’t power itself off on its own. Then finally power your PC back up again and see if the problem resolved itself on its own. Many times a simple reboot is all it takes.