Raid hdd issues?

I went over to a friends house to work on their computer for them and ended up replacing their video card. As I was working on it I was messing around with their intel raid storage and noticed that it was not working anymore and it said the driver was not installed. I went into bios and checked and somehow the bios was now on ide instead of raid. How the heck it got changed no one knows because they have no idea how to get into the bios.
I have never had to do this before but what am I going to do to get the raid back on for them. Do I unhook one hdd and then go into bios and turn on raid and start the computer with one hdd and then tell it to rebuild? Would someone be willing to give me step by step instructions on how to do this if you know because I have never had to do this before. Thanks.

It sounds like you might have invoked a Bios reset to default - some early boards had default for Sata as IDE (Pata). On those, it is as simple as changing the settings back to Sata following the mobo guide - in older mobos there was also an 'enhanced mode' setting.

It is an Asus P5e board. Only about 1.5 years old I think.

So, you go to the Asus site, download the manual, and read about the required Bios settings for Raid 0.

Then make them so!

Unless you wiped drives or swapped ports, the Raid will still be there.

It is a mirror raid. Raid 1.

0, 1, 5 - who cares. Re-establish Sata Raid operation in Bios and it should be OK as I said earlier.

Awesome. I will do that. Thanks.