My theory: your computer has been hacked by a socalled Microsoft tech. Moreover, it's quite unlikely a speedtest is incompatible with an OS, since it runs in a browser. It should run in all browsers in a 32-bit version of Windows 7.
Just a theory, of course.
Kees
Our two home computers have rather suddenly become unable to download PDFs from websites. We suspect our problem is with HughesNet satellite service and are having it checked out by HughesNet tech. support. Tried to download a CNET speed test but got an error message it is incompatible with my 32-bit Dell Precision T3500. Running Windows 7. We have also had our computers checked-out by Microsoft tech support. Any theories? Thanks

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