Hello!
I can help you to block the whole screen and provide a step-by-step manual.
I am a senior system administrator with 10+ years of experience.
I have been working at a hosting company and set up, managed, troubleshot and optimized about 300 servers, websites, apps, databases.
Also I have experience with such technologies as Virtuozzo, different types of virtualization (OpenVZ, KVM, XEN), different distributives of OS Linux / OS Unix / OS MS Windows Server systems, VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning etc.
Please, contact me anytime