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USB Thumb drives destroyed by laptop

I have a pretty serious problem with my Dell Inspiron 600m laptop running Win XP SP3. It seems that any USB thumb drive that I plug into it is and plug into my Win 7 box is no longer a valid drive according to Win 7. I can copy files to it on the laptop, but Win 7 then says it isn't a valid drive. However it is still readable by the laptop. Win 7 can't even format it since it says it isn't a valid drive. The drive worked just fine in Win 7 immediately before I plugged it into the laptop. I tried this twice with 2 different thumb drives; the results were the same (a Lexar and a Cruzer).
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orerockon
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orerockon
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1 Solution
 
michael_madsenCommented:
Have you tried running an Antivirus scan on your laptop?
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orerockonAuthor Commented:
PS Win 7 explorer is essentially crippled while I have the thumb drive in any USB port on the machine. It remains this way after I remove the drive until I reboot the machine. I can't even save files form various apps. Might this be a Win 7 screwup?
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LHT_STCommented:
can another xp machine read the key normally?
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michael_madsenCommented:
orerockon:

any news on this issue?
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orerockonAuthor Commented:
I cannot resolve this problem, so I reverted to formatting the thumb drives. It worked for the Lexar but failed for the Cruzer, which is not even recognized as a data storage device. So I gave up on the Cruzer and now the Lexar is recognized after I plug it in, and then reboot.  
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orerockonAuthor Commented:
No one answered with any proposed solution.
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