wordpress control panel login problems

I have a blog that was built with word press. when I want to login into control panel it redirect me to this page:

http://tweld.com/wp-login.php?redirect_to=http%3A%2F%2Ftweld.com%2Fwp-admin%2F&reauth=1

One time I Uninstalled word press files and then uploaded again. after that it worked correctly. but this problem has arisen again.

Have a read of this codex guide: http://codex.wordpress.org/Login_Trouble

have a look in your error logs at your hosts backend.

try:

1. logout or logout with http://www.yourdomain.com/wp-login.php?action=logout
2. disable all plugins
3. clear cookies/cache
4. exit browser

just for troubleshooting purposes try: - switching to the default theme by renaming your current theme's folder in wp-content/themes using FTP or whatever file management application your host provides.

• resetting the plugins folder by using FTP or whatever file management application your host provides. Sometimes, an apparently inactive plugin can still cause problems.

• renaming or deleting the .htaccess file after making a backup of this file

• Check your .htaccess and wp-config.php if they are correct

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