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.
There are 2 reasons that could be the cause behind your low TSH: 1  Your glands simply aren't producing enough; 2  Your thyroid gland is producing too much of the thyroid hormone which signals to your brain to stop producing anymore.