I can not log in to Magento 1.9.2 [closed]

Have you restored the data of mysql folder? So you probably lost the data (hope you have a backup). On the mysql does not start (which was what triggered the problem) rather than leaving deleting things look in the log but you need to enable the log first ( How can I start and check my MySQL log? ), access your ./bin folder (assuming it's windows) by cmd , something like:

cd C:\wwamp\mysql\bin

  

If you have a backup of the ./data folder, restore it at this time

Then type mysql into the cmd input and press Enter. Then run this:

mysql> SET GLOBAL general_log = 'ON';

If it fails, try to edit the file my.conf where something like:

# The MySQL server
[mysqld]
port        = 3306
socket      = /.tmp/mysql.sock
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K
sync_binlog = 0

And add this:

general_log = 1

Check the task manager if it has any mysql process, finalize all of them (or restart Windows).

After this will be generated a log file in the folder ./data called mysql.log , check the cause of the problem that had affected mysql initialization.

There are some factors that influence admin login, the most common is the cookie path in the database is incorrect.

Verify:

UPDATE core_config_data set value "www.seudominio.com.br" where path = 'web/cookie/cookie_domain';