Hi Blair.7,

The error message "msseces.exe - unable to locate component" is related to Microsoft Security Essentials.

To confirm this, we can boot the computer to Safe mode with networking and disable Microsoft Security Essentials from start-up. Please refer the link http://dell.to/nf5IKe to boot computer in Safe mode with networking. Once in Safe mode, press the “Windows + R” to launch the run window. Type “Msconfig” in the run window and press enter. Go to Start-up Tab and un-check the box for Microsoft Security Essentials. Click Apply, and then click Ok. Restart the computer when prompted. 

Please check if the error message appears after the system restarts. If the error message does not show up, we can re-install the Microsoft Security Essentials: Click Start, type Programs and Features, and then press enter. Locate and right click Microsoft Security Essentials, and then click Uninstall/Change. Follow the on-screen instructions to complete the un-installation. Restart the computer. Click here to download and install Microsoft Security Essentials . Restart the computer and check for the error message.

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