Welcome to SF STOP 0x000000E1:
WORKER_THREAD_RETURNED_AT_BAD_IRQL Usual causes:
Device driver Problematic software:
- Start Menu\Programs\Auslogics\BoostSpeed\Utilities Public:Start Menu\Programs\Auslogics\BoostSpeed\Utilities Public
- Start Menu\Programs\McAfee Public:Start Menu\Programs\McAfee Public
- Start Menu\Programs\McAfee Security Scan Plus Public:Start Menu\Programs\McAfee Security Scan Plus Public
Please refrain from using tools like "Auslogics BoosSpeed
Uninstall it with Revo Uninstaller
which you already have
If you want to keep your system healthy go through this thread:
→ Optimize Windows 7
You already have Microsoft Security Essentials installed but why McAfee?
Please uninstall McAfee and its components. They are known causes to blue
screens on computers.
→ McAfee Removal Tool
I and many members on our forum recommend Microsoft security essentials with
a great combination of Malware Bytes.
→ Microsoft Security Essentials - Free Antivirus for Windows
→ Malwarebytes - The Free version
→ Good and Free system security combination.
Run a full scan with both (separately) once downloaded, installed and updated.
In addition, Run this tool and delete anything it finds:
→ Anti-rootkit utility TDSSKiller
Run the system file checker and reboot if integrity violations are found:
→ SFC /SCANNOW Command - System File Checker
Now run disk check for your hard disk for file system errors and bad sectors on it:
→ Disk Check
Free up your start-up following these tutorials:
→ Startup Programs - Change
→ Troubleshoot Application Conflicts by Performing a Clean Startup
Nothing except your antivirus is required at start-up
Do the above and let us know the results. We'll do more troubleshooting if required.