After a month of Usage i noticed rattling sound from the GPU fan and i searched the net and found that it is a common problem , i contacted Acer Support and Amazon Support . I followed the Customer Services Instruction and did few steps with them in BIOS through the PHONE and they told it is ok now . Only after 1 week appeared again and I am frustrated as i was waiting for this Laptop too much time . I am a Doctor not a heavy Gamer at all . Another thing is the screen quality i did not notice any difference between it and usual 60 hz refresh rate screens also the very bad bleeding of the screen and very limited battery life . I am now suffering this loud annoying rattling sound from the fan which i already cleaned by a blower but nothing changed . i am trying to contact Acer support no one answering me . i will not recommend it anymore .