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um... do a system restore. but computers don't downgrade that quick. The process takes quite a few minutes.

First, that kind of thing doesn't happen. No OS randomly downgrades itself. Especially given that downgrading requires formatting the hard drive, which would hose everything up. Second, how did you get a copy of Enterprise? It's not sold to individuals. If you got it from your office, contact the IT staff there. It could be that something as simple as connecting it to the corporate network while logged in as a domain admin will take care of the problem.

Windows 7 Enterprise edition is not available to a home user, as this is the Company version available only via the multi-license option available only to those customers. If you have an Enterprise edition then it's an illegal pirate copy. And that's why it converted back to Basic....because it's a hacked pirate copy.

whilst it comes to XP you need to use the considerable on diverse machines, yet basically 4 or 5 situations. i comprehend this because of the fact i've got achieved it. i've got no longer had the could desire to objective it with residing house windows 7 yet don't think it quite is any diverse. with reference to an o.e.m version (unique kit producer) that's utilized with the aid of manufactures, IT businesses and laptop Engineers (Like Myself). whilst setting up a Retail working device (In XP's case) you need to use the considerable that got here with the disc for the duration of setting up. it won't settle for the different. each and every residing house windows gadget till custom made could have a sticky label on it with the considerable to the OS put in. with the aid of using an o.e.m version the unique key may well be entered. (must be the comparable version of OS initially put in). in case your different pc had residing house windows 7 on it initially you need to use the considerable on the sticky label decrease than the gadget. to alter the considerable or turn on one bypass initiate>administration Panel>device and its on the backside of the exhibit. If i grow to be you id get my palms on a OEM version to the OS put in on your pc. in case you cant turn on residing house windows 7 on it you may consistently placed the unique OS back on it.

once again, oggus, you guys have excelled yourselves, Office 2010 downloaded, installed and activated all with an hour and half. No problems..

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You probably got a virus. That's likely, seeing how you claim to have done nothing to initiate it.