Which version of Lightroom do you have?
Which operating system: Windows or mac?
Do you receive any sort of error while working with sliders?
Thank for your reply.
The problem is I somehow hid my basic develop panel and not able to bring it back.
Thanks for the update.
Would suggest you to go to Develop module> select Window menu> Panels> select Basic and you should get it back.
Its repaired. Thanks for your help.
Glad to help