We appreciate the update, RPP. The computer sounds problematic and a handful, and we can understand your frustrations. The multiple issues that you experience at the same time can be caused by corrupted system files. Aside from the earlier recommendations that we provided, we also suggest that you perform an in-place upgrade. By performing an in-place upgrade, you will clean up the system which may help resolve some troubles with your desktop. We have a video that can show you how to perform an in-place upgrade on your desktop.
You might also be experiencing this issue because of a hardware problem. To troubleshoot hardware-related issues, we highly recommend that you reach out to your desktop manufacturer for further assistance. For more information on how to contact your desktop manufacturer, you may refer to the following article: Computer manufacturers' contact information.
Let us know how it goes so we can assist you further.