Luis, your English is fine. You've made a couple of spelling errors but your grammar is good and your meaning is clear.
Now... you would normally use 10x probe setting, on both the probe and in the scope's Channel menu, for your measurement. When you say "the screen freezes" when you use the 10x setting.... could this be because the Trigger voltage setting is now out of range of the signal you are measuring?
If you can post a schematic of the circuit you are probing, and a screenshot of the scope, including the scope's settings, it may help us diagnose your problem.