Good morning,

Iím with a serious problem with magento, the stock of same products drop to zero always which a customer buy a product

I already installed the magento from scratch, I Installed all modules from scratch, I did upgrade of magento version the version for version 1.7 and nothing.

I also did a test with database, I put the database in a new folder installation scratched in and it works but in the root nothing

I need help, faster possible please

Thanks by now