Thoughts on Gigahertz in SMNE

Hello! I know na hindi siya about building a pc but dinala ko yung laptop ko yesterday sa gigahertz since sila yung authorized service center ng asus but all i see sa social media is bad review 😭

My case is i bought my laptop last year around sept and everything was fine naman not until last january 10 habang nanonood ako is biglang nagshut down and hindi naman siya lowbatt, so baka kako masyadong mataas temp kaya cinooldown ko muna bago itry iopen then ayun ganon na lagi after 10 mins na pagkaopen nagsushutdown. I don't what caused it kasi hindi ko naman siya pinapatanong sa kama since bawal at naboblock yung vents. Then, dinaanan ko kanina and nanghingi ng update if may diagnosis na sabi nila is defective yung mainboard, and tinanong ko yung girl na nasa counter if ano naging cause nun, sabi lang nya is parang hindi naman daw lahat ng laptop is perfect.

What i want to know is yung replacement ba ng mainboard is covered ba ng warranty since defective pala yung nasa laptop ko? And how long will it take po kaya sakanila bago magawa?

Thank you!