Advice Dos Donts

Never rely on floppy disks as a safe data medium or for permanent storage of important data
Always keep at least two copies of important data.
Regularly back up your important data.
Regularly check your backups are working.
Have a plan for disaster recovery.
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Always opt for the best anti-virus protection you can afford.
Always change the administrator password to something that no person or program could easily guess or generate.
Have log on passwords for all users (i.e. to secure your data).
Never open an email with a suspicious attachment (e.g. .exe .vbs .dll .bat) unless it is one you are expecting and from a trusted source.
Write down your passwords and keep in a safe place.
Don't allow unauthorised software on your PCs.
If your system has external email and/or Internet access then protect your system with a firewall.
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If you have in-house IT support, seriously consider an external support contract as backup.
If you don't have in-house IT support, an external support contract is essential.
If you have problems with your PC, always reboot before phoning for support.
If you have system-wide problems then get someone who knows what they are doing to restart the server. Nine times out of ten it will fix the problem.
If on starting your PC, you get a message like "Invalid system disk" then remove the floppy disk!
Always shut down properly. Never use the off button or switch off at the mains!
Before phoning for support, have ready a clear description of the problem and note down any error messages or codes.
Don't dabble! If in doubt, consult someone who knows what they are doing.

CTSM: Basic Do's and Don'ts