I have been goin crazy since last night when i started my pc and got a boot error and check disk went threw files and then booted up fine.I was playing a mmorpg and got booted with a fatal error blue screen c0000021a . I had to reboot then it had a boot error saying insert system disk and press enter, i dont have one so i restarted and a different error came and it has been doing this all night were if i restart when i cant get in from a error it will work but one thing allways hapens is check disk runs when i boot and somtimes the files error and like now it didnt and i got in to my pc.I hope this makes cense i have been going crazy please any help will be appreciated.