Friend of mine sent his Lenovo to the center (not sure where precisely) and received the laptop in good condition after 10 days.

That's all I know. Better than Asus it seems.

Good service in Puchong Authorized Service agent.. got my Y580 fixed in 3 days with a new motherboard. No problems so far for 5 months.

Yeah. The guy told me this was a common problem and easily fixed by replacing the motherboard. He said Lenovo sends out the parts pretty quick. The good thing was he listened to my problem and believed me and he didnt really test it since I described quite clearly what the problem is. The moment he heard my situation he straight said he will change the motherboard no questions asked.

It was an authorized service agent and not those official IBM/Lenovo centres so the procedure might be quicker unlike official ones where they have to go through certain procedures like reformat, test few days for problems, if got problem only they will change the parts.

My cousin's Z480 which had similar problems with the GPU went to a service agent in Rawang, he got it back in 5 days. Quite efficient too but my cousin got cheated rm10 there for reformat when it should be free.

Can't just exchange the laptop from the shop? They should have a refund period wad.. My cousin's Z480 had problems and changed another one from the shop but still got problems though. Looks like Lenovo Quality Control  really really really bad.. but their laptops damn cheap for their specs la. So is like gambling with the quality only.

If you Google "Lenovo GPU problems" you can see thousands of results.

Definitely cause of the different organizational system in official centres. They need to follow a strict protocols and procedures.. Now you know already, next time go to service agents for better service.