The best anti-malware prevention is the finger you use to left-click your mouse. The safest key on your keybpard is ESC and is much more powerful than hoping for an Undo feature.
DELL
We have been authorized resellers for DELL servers and PCs for years. Currently, the only servers we offer are DELL. Their price/performance ratio and their warranty service programs are very strong. The same can be said for the value of their industry-leading notebook PCs.