SQL Server is running fine. I can query tables in the db and I ran SQL Profile while trying to load the site and saw nothing obviously wrong.
Any Firewall/Antivirus software installed recently? Or that might be blocking access to the DB.
No firewall/antivirus installed recently.
In the end I took the db offline then brought it back online and it fixed the problem.
I am receiving a timeout error when loading either the site or the CMS on my local PC. This project has been running fine for nearly a year and is still running fine on other developers' machines.