Slider is not working

Switch to Twenty Twelve theme temporarily with all plugins deactivated and see if you can upload images.

thank u krishna

but i am not that good at wordpress
??

when i switch to the other theme, will it delete my all content ?

hi krishna

i switched to that theme for few mins

but stil m getting this error after uploading pic from admin account
The uploaded file could not be moved to wp-content/uploads/2013/07.

plz help me

No. Nothing to worry. All your contents are saved in your database. When you revert to your current theme, everything will work as usual.

thank u krishna

i tried it but still the errors are coming ??

1. Deactivate all plugins first
2. Switch to Twenty Twelve theme and upload an image.
3. Note down the error that you get, if any, if the image cannot be uploaded.
4. Keep the theme etc. that way and report here so that we can assess what’s happening.

thnk u krishna sir, i am going to that now

krishna sir,

i was trying to delete one plugin now

it shows error and stopped me from deleting the plugin

error is :
ERROR: There was an error connecting to the server, Please verify the settings are correct.

To perform the requested action, WordPress needs to access your web server. Please enter your FTP credentials to proceed. If you do not remember your credentials, you should contact your web host.

Hostname
FTP Username
FTP Password
Connection Type
Connection Type FTP FTPS (SSL)

i had deactivates all plugins and switched to the other theme also

still getting same error after uploading any image

Can you login to your hosting account? If so try the following:
1. Look for wp-content/themes and rename your current theme by adding -old
2. Look for wp-content/plugins and add -old to the plugins folder
3. Return to your dashboard and see if the active theme is the default WordPress theme
4. Try to upload an image.

Sorry, I do not find any default WordPress theme (2012 or 2011).