even after installing prolific vista driver on windows 7 , not getting the file ser2pl67.sys in path specified C://windows/system32/drivers folder/ ser2pl67.sys?

What is the model of your computer?

I recommend you to download the latest drivers for Windows 7 from the manufacturer's site.

Hi jaiswal,

If you are using Windows 7 we suggest you post your question to Windows 7 Forum with more details on this issue, there you can get more effective suggestion by other experts who familiar with Windows 7. Your understanding is highly appreciated.

https://social.technet.microsoft.com/Forums/windows/en-US/home?category=w7itpro

For your issue, if you mean you installed a Vista version driver in Windows 7, wed suggest you replacing it with suitable driver for Windows 7.

Regards,

D. Wu