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.
To: Ami1801. Yes, usually, if your TSH is too low and you feel hyper, a reduction in meds is indicated. Sometimes, after thyroid cancer, doctors like to keep TSH below 0.1 to lessen the chance of recurrence. TSH is very unreliable as an indicator of thyroid status.