Mysql5.5 version is installed
1. open your downloaded mysql-5.5-win × 64.mis
2. Click Next
3. Click I agree, the next step
4. Select the classic installation click the Next
5. The next step click Install
6. At this time a new window will pop, click the Next
7. The click the Next
8. The operation Click Finish
9. click Next, the next step
10. The detailed configuration selected, the next step
11. Select development machine, the next step
12 select the multi-database, the next step
13. click the Next
14. A selecting a first default is 20, the next step
15. Add firewall exeception ... check the next step
16. Choose The last set utf8
17. The entire check, as shown in Figure
18. set password,
19. wait for the installation
20. The installation is successful
hope this can help you solve the problem.