Flush your DNS
Your system keeps a record of IP addresses and domain names for the servers you access. Sometimes it helps to clear old data from this cache and start fresh. It's extra important to try this if you've had any problems with your site.
NOTE: Complete these steps using an adminstrator account. You will be typing prompts into the CMD console, so it is very important that you enter the commands exactly as shown, and complete each command one by one.
Windows 10
Hold down the Windows Key and press X.
Click Command Prompt (Admin).
When the command prompt opens, type ipconfig/flushdns and press Enter.
Type ipconfig /registerdns and press Enter.
Type ipconfig /release and press Enter.
Type ipconfig /renew and press Enter.
Type netsh winsock reset and press Enter.
Reboot your computer.
Windows 8
Navigate to the desktop.
Hold down the Windows key and press R. (this will open the Run dialogue).
Type cmd and press Enter (this will open a command prompt).
Type ipconfig /flushdns and press Enter.
Type ipconfig /registerdns and press Enter.
Type ipconfig /release and press Enter.
Type ipconfig /renew and press Enter.
Type netsh winsock reset and press Enter.
Reboot the computer.
Windows 7
Hold down the Windows key and press R (this will open the Run dialogue).
Type cmd and press Enter (this will open a command prompt).
Type ipconfig /flushdns and press Enter.
Type ipconfig /registerdns and press Enter.
Type ipconfig /release and press Enter.
Type ipconfig /renew and press Enter.
Type netsh winsock reset and press Enter.
Reboot the computer.