Re: Help!Help!Help! Dell gone mental!
Does anything happen before it says Diagnostic Boot Selected? Like any sort of Dell splash screen or anything? If so you should be able to get a safe boot or something other than a Diagnostic Boot.
Also try plugging in a USB Mouse and see if it works out.
What might have happened is when you were putting the laptop back together you might not have gotten a complete connection with the touch pad, which is why it would run a Diagnostic Boot.
Hope some of these ideas work
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