Windows 7: Bluescreen

You have both Norton and McAfee installed. That is a recipe for disaster. I would recommend removing one or the other at the very least; both are known to cause blue screen crashes from time to time, and having both installed scanning the same system files and using the same system resources results in a high likelihood for instability and blue screen crashes.

How to uninstall or reinstall supported McAfee products using the McAfee Consumer Products Removal tool (MCPR.exe)

Download and run the Norton Removal Tool.

Once you have removed at least one of the programs, we can provide more troubleshooting.

If you remove both:

Make sure to install security software. I recommend either of these:

• Microsoft Security Essentials - Free Antivirus for Windows coupled with Malwarebytes. Do not start the free trial of Malwarebytes. Just use the standalone version, update it, and scan your computer once a week with Malwarebytes and with Microsoft Security Essentials.
  
  
• Good and Free system security combination.

After installing your security software, update it, and then run full scans today with each program. Report back the results of the scans.

Code:

Start Menu\Programs\Glary Utilities	Public:Start Menu\Programs\Glary Utilities	Public

• Many of us on the forums actually do not recommend automated optimization tools for Windows 7. Windows 7 does a much better job of handling its own optimization than its predecessors did. We especially do not recommend registry cleaning as an "optimization" step because automated registry cleaning causes more harm to the registry than it actually repairs.
  
  In the future, if you need help optimizing Windows 7, please post a thread in Performance & Maintenance - Windows 7 Forums or follow the tutorial enclosed in that forum to Optimize Windows 7.

Your previous crashes pointed to USB related issues. For the USB problems...

• Start with USB Driver - General Fix for Problems to resolve the USB issues. Also, USB ports can sometimes enter a safe power state to protect the system from power surges due to USB devices. To reset the USB ports to a nominal power state:
  

  1. Shut down and turn off the computer.
     
  2. Unplug the computer from the wall or surge protector (then remove the battery if it is a laptop).
     
  3. "Remove the computer from any port replicator or docking station, disconnect
     cables to printers or devices such as external monitors, USB memory sticks or SD cards, headset or external speakers, mouse or auxiliary keyboard, turn off WIFI and Bluetooth wireless devices." (Use Hard Reset to Resolve Hardware and Software Issues HP Pavilion dv5000 Notebook PC series - HP Customer Care (United States - English))
     
  4. Hold down the power button for 30 seconds. This closes the circuit and ensures all
     power from components is drained to clear the software connections between the BIOS
     and hardware and clear any corruption in the temporary memory.
     
  5. (If it is a laptop, plug the battery back into the laptop and then) Plug the computer back into the wall. Do not reconnect any unnecessary peripherals; monitor, keyboard,
     and mouse should suffice and be the only peripherals reconnected.
     
  6. Turn it on to reinitialize the software connections between the BIOS and hardware