To format a computer means that all your data will be lost. Your operating system, programs, emails, drivers, pictures, everything! All of the updates on your programs will be gone, infarct the every entire program will be gone.
This drop in TSH is an attempt to return circulating thyroid hormone levels to normal. So, a test to measure the amount of TSH in your system will usually show lower than normal TSH when the thyroid is overactive. So, in general, LOWER TSH = OVERACTIVE THYROID / HYPERTHYROIDISM.
But in the typical and most common form of hypothyroidism, the main thyroid hormone T4 is low, and the TSH level is high. The next question is: When is low too low, and when is high too high? Blood levels have normal ranges, but other factors need to be taken into account as well, such as the presence or absence of symptoms.