It first started with xampp, so I downloaded wamp, but it happened again.
After successfull start of mysql, I verify that in task menager, it freezes, and i can't do anything with it, I can't connect with myslq command from command promt nor using phpmyadmin and with xampp I can't even shut it down. Error message is: 2003 "could not connect to mysql server" or something like this. I tried to reinstall, both xampp and wamp, then checked whole registry with regedit and registry mechanic but nothing helped. Stangelly sometimes it works like nothing ever happened.
Error message is: 2003 "server did not respond", username is root and I didn't change password so it is still empty (no password) and I'm sure I'm giving the right values. I also tried to run it when firewall (outpost) and antivirus (AVG free) were shut down, and I've done antivirus and antispyware scans just to make sure.
Server is running, I'm sure. I can load the index page (I type localhost or 127.0.0.1 in my browser) and everything but mysql works. I try to connect to mysql by using phpmyadmin from the wamp's index page, how can port be wrong?
Problem solved (at least I hope so). Problem was my firewall (Outpost), it was configured not to load with system because I'n not online all the time. mysql service was active but did not respond. After starting firewall it worked normally, and continues to work after firewall is shut down.