First of all, lost tronlink password will not lead to TRX loss. keep the private key of your tron address safe, then your TRX will be safe.
I guess you are using the Tronlink Chrome extension, right? if yes try the below steps:
- remove tronlink extension from chrome. type "chrome://extensions" in the address bar, you can see all your extensions.
- Install the tronlink extension again.
- Import the private key of your Tron address again. it will require you to set a new password.