HP India — Serial number: 8CC1254G74

I purchased HP AIO 24-df0000a model for my business use. I am a stock trader. Since the date of purchase, this pc is showing signs of crashing when we save Microsoft office file or when we start the pc. When using it also, It hangs in between during my trading times. I have incurred huge losses because of the crashing. I have made videos also when the system crashed or not working. I have to restart the computer atleast twice in a day. I need replacement of this defective product