http://www.google.com.au/search?hl=en&q=system+error+1814&meta=&aq=f&oq=
Google results for your Error 1814
http://www.lavasoftsupport.com/index.php?showtopic=12984
If the error 1814 persist (Could not login to Service), then please try these steps as suggested by LS Tobias:
QUOTE
Try manually restarting the service by following these steps:
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- go to the start menu, click 'Run...' and type 'services.msc'
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- in the services window, locate 'Ad-Aware 2007 Service', select it and click 'Stop'
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- when the service is stopped, click 'Start'
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- When the service is running, try starting Ad-Aware 2007 again.

Mick Murphy - Microsoft Partner