What happened?? My mac turned into a PC

Hi - any insight would be appreciated.
Using my gorgeous computer all day,.. as usual... late last night started to watch a DVD...
Then the problem started... in the middle of loading DVD.... it suddenly froze..I could do nothing.. nothing responded... I closed the lid.. when I opened it the fans started, I could hear other strange sounds... but the screen was completely blank... I then heard some mail come through... but still the screen was completley blank..then battery was charging, I was plugged into the mains.. and then the green lights on the key board lit up.. but nothing on the screen. Then I tried to hold the power button down for about 10 seconds, then the computer closed down.. an anxious night, worrying about my beloved mac and all the info on for a big thing on Monday. This morning, switched it on.. and bam everything is as normal... except that this thing happened, will it happened again. My mac has never frozen, long gone are those PC nightmares ..or are they ??? Any insight, or explanation would be great. Thanks

Hi Jo,
Welcome to Apple discussions! Unfortunately, Macs are not miracle devices. They are manmade pieces of technology and as such, they're not immune to problems like you describe. I have had similar experiences on my Macs at one time or another.
The first thing to try is reloading the same DVD that caused the problem. See if it loads correctly this time. If not, try a different DVD and see if the problem persists.
If everything works fine, I would not worry too much. It's likely the event was a one time thing.

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