Hi Saeedalipak,
First dont panic.
Its not a big problem as long as everything in the original C: install is still there.
1. We need to remove the wampmysql and wampapache services that were created by your new install of WAMPServer.
So start WAMPServer and using the wampmanager menus do this:-
left click wampmanager icon in the system tray -> MySQL -> Service -> Remove Service
left click wampmanager icon in the system tray -> Apache -> Service -> Remove Service
Now CHECK/CHANGE the WAMPServer Desktop icon that you use to start WampServer and any from your Windows Start Menu so that they execute out of the C:\wamp installed folders.
left click on the desktop icon -> Properties and look at the Shortcut tab
and make sure is it running C:\wamp\wampmanager.exe
Now restart Wampmanager by double clicking on the WAMPServer desktop icon.
So now we need to re-create the correct wampmysql and wampapache services so do this:-
left click wampmanager icon in the system tray -> MySQL -> Service -> Install Service
left click wampmanager icon in the system tray -> Apache -> Service -> Install Service
This should put you back to using the versions of Apache and MySQL that your original install were using and your database and website should again be available.
Hopefully no database access's will have been in-flight when you did the install and your database will be in a good state, but a check would be a good idea. Check for crashed tables!
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(Windows 10 Pro 64bit) (Wampserver 3.3.4 64bit) Aestan Tray Menu 3.2.5.4
<Apache versions MULTIPE> <PHP versions MULTIPLE> <MySQL Versions MULTIPLE>
<MariaDB versions MULTIPLE> <phpMyAdmin versions MULTIPLE> <MySQL Workbench 8.0.23>Read The Manuals Apache --
MySQL --
PHP --
phpMyAdminGet your Apache/MySQL/mariaDB/PHP ADDONs here from the
WAMPServer alternate Repo-X-X-X-
Backup your databases regularly Here is How dont regret it later! Yes even when developing -X-X-X-