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Problems with my acer laptop

January 22, 2013 12:44:05 PM

When I switch on my ACER Travelmate 4230 (BL 50 model) the following message appears when I expect my desktop to open up:

Isass.exe --Bad Image
The application or DLLC:\WINDOWS\system32\DNSAPI.dll is not a valid Windows image.
Please check against your installation diskette

Can you explain to me what this means? and can anything be done to fix the problem?

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