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.
Significant signs that the infant may have hypothyroidism are a level of low T4 (thyroxine, a hormone secreted by the thyroid gland that regulates metabolism) and or high level of TSH in the blood. Some infants with CH will have low T4 levels, despite normal TSH levels.