New
#11
RUn a full scan with Malwarebytes, in Safe Mode if necessary.
Next run SFC -SCANNOW Command.
REplace MucAfee with Microsoft Security Essentials.
Run a Clean Boot by turning off all Startup items except AV in msconfig. Startup Programs - Change. After reboots check back for any which have written themselves back in to turn them off at startup in their program preferences. Then turn off everything in msconfig>Services except AV after Hiding All MS Services.
If these fail, work through the rest of these troubleshooting steps