Can't start PostgreSQL service on Windows and it's quite urgent

Well i'm new with postgre and dont know much, so i cant figure out this
problem by myself. Though it might be easy for someone knowing.

The problem is my postgre sevice dont start giving me
*FATAL:  900 is outside the valid range for parameter
"autovacuum_analyze_scale_factor" (0 .. 100)*

I'm using Win 2008R2 server, and all was OK before today, though i tried
some tweaks changing shared_buffers, effective_cache_size and some other
from RESOURCE USAGE group.
I'm tried to disable autovacuum and track_counts but it didnt do a thing.

Even some vague directions may help.





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