Hello, about 6 months ago I had an laptop which i have thrown to floor beacuse my father closed my game and i got angry. After that I regret it and wanted to use it again. Than i sent to random guy in town to repair it and he told me i "replaced you HDD" but the pc only works while it on. After you shutdown you have to install the windows again. So can you guys figure out whats the problem? or he just replaced a broken HDD into my laptop.