Hello, I have an issue after my McAffee antivirus updated and asked me to reboot the system. After that, every time my Windows XP starts, a BSOD appears in the logo and in an instant the system restarts the startup, leaving me in the select starting options page because Windows didn't started correctly, making a loop. If I select Start Windows normally or with the last good configuration, the loop repeats the same with the BSOD. If I select any of the safe modes, after loading the components it reboots trying to load the MPU file, making the same loop. I tried to take a picture of the screen, and after putting it in a movie, I noted two features: 1) The message error is related to a message:page_fault_in_nonpaged_area 2) And in the bottom I realized that is a 0x0000000050 error involving mfehdisk.sys. All the technical features are ilegible cause of the speed of the reboot. Is there any way of fixing his without reinstalling Windows? Or, how I can make a back-up from the BIOS before I can do this? I repeat tht all started after updating my McAffee Antivirus Enterprise Edition Features of my PC:- Windows XP standard OS with SP3- 1 GB RAM- A main hard disk of 80 GB partitioned in 2 drives of 40 GB each, and a slave with 20 GB- Geforce2600 video card with 128 MB ram. Hope anybody could help me.