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my computer froze when trying to attach file to e-mail and when I restarted my computer a black screen came up display this with different numbers in front of it each time it was repeated multiple times.

"Buffer 1/0 error on device sr0 logical block 0" "end_request: 1/0 error sector 0"

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It sounds like you may have a hard disk about to fail (or has already done so). If you have a LiveCD or USB you can boot to that and try repairing the filesystem or at least get your data off the drive.


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