I was working on an Excel 2010 file on my Win 7 x64 laptop & it's running low on battery so I saved
the Excel file to a Nitro MicroSD (that's inserted inside an SD adapter that comes bundled with the
Then I worked on another laptop (Win XP x32bit) that has more battery that uses Excel 2003 with
an MS converter: amount of data entered into Excel is like 3 over hours of data entry: Excel 2003
disallows me to do "Save" as it indicated "Read Only" so I did "Save As" to save another file name
& the converter saves it to the Nitro as an .xlsx (this is an Excel 2010 format) after conversion
without any error message & I hibernated my Win XP laptop properly.
Now both the Excel 2003 on the Win XP as well as the Excel 2010 on the Win 7 laptops (as well as
my kid's MS Excel 2013 on her Macbook when I emailed it to her) could NOT read this saved xlsx
file, giving the error message shown in attachment 1.
I need back this Excel file as it's worth more than 3 hours of work. How can I recover back the
Excel file with 3+ hours of work?
What's the next best courses of actions I should take now? I reckon there's something wrong with
this Nitro microSD which I got from Amazon. All my previous SD & thumb drives which I work &
copy Excel files between the 2 laptops never gave this issue, so don't think it's a laptop nor
Windows nor MS Excel issue but the Nitro or the microSD to SD adapter issue.
How do I determine which component is at fault? Do I copy out everything first from this Nitro
& reformat it to prevent future recurrence? Read that this Nitro is a fast thingy, so not sure if
the two laptop's SD reader slots cant copy with the speed?
Subsequently when I copy more files to this Nitro from the Win 7 laptop & did a directory listing, it
gave lots of garbage characters as shown below:
Directory of E:\ipfeb
x <== good original Excel
x <== bad unreadable Excel
[»AJ↕`$ ░.¥ ╬]
76 File(s) 185,396,831,180 bytes
41 Dir(s) 5,086,674,944 bytes free