Strange problem on M9750

Ok, so last night before heading off to bed I shut down my M9750. Upon returning home from work today I booted the laptop as usual and was greeted with a screen asking me how I wanted to boot. I selected default configuration and it proceeded to try to boot from the network. Of course it would not be able to boot from network so I hard restarted and it happened again. I then went into the Bios and found the boot order had changed with network boot as the primary boot device. I changed it back to the HD and tried to reboot again. No luck as it just sat at a black screen. I then went back in to the bios and began to dig around and found that raid had been disabled and network boot had been enabled. Reset that back to normal and then it booted normally.

So my question is how in the world did the values in the bios change all by themselves? Anyone have any idea? I did a virus scan right after start up and it was negative.

 

My guess would be that your CMOS battery is probably dead.

I've also found that sticking a USB drive in and powering on the system can sometimes change the boot sequence.. but as for you losing RAID.. no idea.