Minimum OS Level Permissions Required to Install LoadRunner

Though it's recommended to be either a local admin or member of the power user group to carry out LR installation, however, there are few occasions where due to security reasons it's not possible for your organization to give you those rights, in that case, there is still a possibility for you to carry out installation with minimum possible rights which are mentioned below in detail:

a.Full access (read/write permissions) to registry keys under:

HKEY_CURRENT_USER\Software\Mercury Interactive 
HKEY_LOCAL_MACHINE\Software\Mercury Interactive

b.Full access (read/write permissions) to the file system to be able to copy files.

If there is any problem either with agent startup or connection from Controller to the agent on a Windows 2000 machine with a power user, try the following: 
1. Open the Local Security Settings window through Start -> Programs ->Administrative Tools -> Local Security Policy. 
2. Select Security Settings -> Local Policies -> User Rights Assignments. 
3. Add the user to the "Create global objects" policy