Question Fault in Motherboard

Oct 7, 2021
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Suddenly one day I started getting frequent blue sceen errors and then my laptop had gone to repair mode, I have tried all possible methods available there but nothimg worked.
Then I moved to service center, there they haven't told me the fault associated and they replaced the motherboard. After that my laptop worked fine for 15 days but after that it started showing the same fault.
Again I moved to service center, Now this time they refered my case to their higher team and they have decided to again change my motherboard and ram too without clearing the fault.
Please suggest me what could be the possible reason for the fault
My computer
ASUS VIVOBBOK X512FL
8GB RAM 512GB SSD i5 8th gen NVIDIA MX 250 2gb graphic card
 
To me it seems like you merely needed to reinstall your motherboard if you were greeted with a screen that said that the OS went into repair mode. Are you able to get into the BIOS for your laptop? If so, can you please take a look at the BIOS version at the time of writing? When did you purchase the laptop? Where are you located?
 
Yes, I was able to get into my BIOS, infact I have also reinstalled windows through BIOS, then also I have faced same error.
When I have got this error for the fist time I have updated my BIOS to version 309 and also updated other drivers, thinking that updating these may work.
I have purchased my laptop 2 years ago, my product is under warranty till 19 oct.
I am from INDIA.
Actually, I want to know what could be the reason for motherboard failure for the first and second time and they are also replacing RAM in second service.