WINDOWS 7 HELP - Panickiiinngg!

[emzy]

Hi guys,

I finally got round to doing the Windows 7 upgrade that I got sent from Dell a few months ago... I what it said, let it delete my wireless card's utility as it asked... off it chugged for an hour or so. It was on the last step (the transferring files or whatever) and I thought it'd finished but it just came up with a screen saying "The upgrade was not successful. Your previous version of Windows will be restored" and "Do not switch off your computer at this time.".

And since then its been continuously restarting itself, it comes up with the Dell Loading screen then gives me the choice between choosing "Windows 7" and "Windows Setup Rollback" but automatically chooses the Rollback thing after 3 seconds. It says "Windows Starting" then goes straight into the same screen about the upgrade being unsuccessful and restarts itself again.

After half an hour I'm starting to get quite worried...

What do I DO?!!?!?!