Hi,
I have some system in which recently we have added Windows Vista. Currently some are working on a trial software to check the performance. But in some case I had already purchased the license key. I have decided to go for upgrade for all the system to reduce some amount. Now there are some problems here which are wasting the time. Is there a way to increase a trial period of a Vista's demo software. If yes then how to do the same. Can I install DOS in a Vista system. If yes then how. And how to change a Vista product key. Post more suggestion regarding this. Thanks in advance.
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