I am running Excel 2007 and have been working on files and ONLY saving them to my USB memory stick.

5 pts.
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Microsoft Excel
USB
I am running Excel 2007 and have been working on files and ONLY saving them to my USB memory stick.
On connecting the device to my PC (using an extension USB cord) I noticed a very brief minute blue like spark, and didn't release until I tried to access my files that the entire content was wiped.
Excel cannot open the file 'LostFile_XLSX_608879.xlsx' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.
Well I think it looks fine to me, and I endeavored to use the Open & Repair when opening the file too, with no luck.

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  • ToddN2000
    Have you tried the USB without the extension or in another PC with the same result? 

    Sounds like there may be an issue with the USB extension. I've had a USB go through a washer and dryer by accident and still work.

    This is a good point as to why back-ups are needed. Yes, you do need to do a little more to keep the files in sync but it's worth the time lost trying to recover lost data. I know how you feel. No media is 100% safe.
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