I was browsing the web when suddenly an error message came up saying ":( Your PC Ran Into A Problem And Needs To Restart. We're Just Collecting Some Error Info, And Then We'll Restart For You (0% Complete.) If You'd Like To Know More, You Can Search Online Later For This Error. KERNEL_DATA_INPAGE_ERROR" then it gave me a black screen, and said "Checking Media [Failed]". It then showed the Dell logo of my computer, (The Usual Start Up Screen), and then the screen disappeared. About 5 seconds later, another black screen (Exactly like the "Checking Media [Failed]" Screen came up saying "No Boot Device Found, Click Any Key To Reboot Machine". I Followed On Screen Directions for about 5 minutes and it kept giving me the same screens over and over again, no change it sight. So I shut off my laptop, waited 30 seconds, turned the computer back on and it gave the "Checking Media [Failed]" Message two times again, it disappeared and the Dell Start Up screen came up again, it let me log in to my computer like normal. This has happened to me twice now and it is extremely frustrating because now I can't be on my computer for more than a half hour at a time without it doing this again. Also I can't scan the computer for viruses, it is within 15 minutes of finishing scanning and I get the "PC Ran Into A Problem" message. Can somebody please help me understand why this is happening? Much Appreciated.