Win 7 stuck on wait.

Clean boot

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1)   Click the Start Button type "msconfig" (without quotation marks) in the Search box, and then press Enter.

Note: If prompted, please click Continue on the User Account Control (UAC) window.

2)   Click the "Services" tab, check the "Hide All Microsoft Services" box and click "Disable All" (if it is not gray).

3)   Click the "Startup" tab, click "Disable All" and click "OK".

4)  Please ensure that NLA is not disabled.

Then, restart the computer. When the "System Configuration Utility" window appears, please check the "Don't show this message or launch the System Configuration Utility when Windows starts" box and click OK.

NOTE: we can go back to normal boot by running msconfig again and checking on Normal Startup in the General tab.

In the Clean Boot Environment, the third party services and applications are disabled, please check the issue persists.

If the problem does not occur, it indicates that the problem is related to one application or service we have disabled. You may use the MSCONFIG tool again to re-enable the disabled item one by one to find out the culprit.