I have no problem with any user making silly mistakes like that. It's the attitude towards the person they have asked to fix the problem that matters.
If you are pleasent and polite and have made a silly error like putting an RJ45 in the wrong place or the USB in the network port (a common one), I will be delighted to help you out, have a chuckle with you about how easy it is to get these things wrong and give you a bit of advice for next time. I'll also know you're not a dick and will likely help you out faster next time.
If however you're are an arsehole your experience may differ.