Hi gmatpixie,
In this post, you're discussing a different issue from the ones you discussed here (
https://gmatclub.com/forum/getting-into ... 09632.html), so I'm going to combine the advice I offered in that other thread to what you're asking about in this one:
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First off, both of your Scores are strong Scores, so either one might be enough to get you into your first-choice School. As such, a retest might not be necessary. You're ultimately asking Admissions questions though - and you're interested in some highly-competitive Schools, so you would likely find it beneficial to speak with an Admissions Expert about your overall profile. There's a Forum full of those Experts here:
https://gmatclub.com/forum/ask-admissio ... tants-124/
You might also choose to purchase the Enhanced Score Report. While the ESR doesn’t provide a lot of information, there are usually a few data points that we can use to define what went wrong on Test Day (and what you should work on to score higher). If you purchase the ESR, then I'll be happy to analyze it for you. If you do choose to retest, then we should discuss your prior studies in more detail first.
As far as your Test Day experience is concerned, those types of situations are rare, but they can happen. You can (and should) certainly file a formal complaint about what you faced on Test Day; the investigation/review of the incident could take several weeks though. While I absolutely agree that the disruption that you faced could (or even did) 'throw off' your performance, there's no way to properly 'quantify' that. From what you described, the proctor solved the problem and you received the standard amount of Test time to complete your Exam. Under severe disruptions (for example, if the computers 'crash' and then restart with time 'lost'), Test Takers tend to be given free/discounted retests - but I'm not sure if what you faced actually fits those types of extreme qualifications. Just to be sure, you should absolutely file a grievance, but I would not necessarily expect a free retest.
GMAT assassins aren't born, they're made,
Rich