u/Ambitious_Report1991

I have an MSI Katana A15 AI B8V laptop Nvidia 4070

Around 6 months after buying it, I started having overheating issues. I took it to the technical service in my country, but they couldn’t find any hardware faults. They only replaced the thermal paste, but the problem continues.

The behaviour is strange:

• Right after booting the laptop, CPU temperatures immediately spike to around 89°C, then slowly drop and stabilise around 50°C during moderate use.
• In MSI Center, I use “Extreme Performance” mode because in “Balanced” mode, it sometimes feels like the fans are barely working.
• The main problem happens while gaming. In games like Helldivers or even BT6, temperatures quickly rise above 95°C and often hit 99–100°C and then it just turns off.
• The temperature spikes are especially noticeable during loading screens or shader compilation, where temperatures jump rapidly and then sometimes drop again.
• In demanding games, temperatures stay around 99°C almost permanently.
• The issue becomes noticeably worse when the laptop is plugged in.

Things I already tried:

• Limiting CPU usage to 70% while plugged in.
• Taking it to technical service.
• Replacing thermal paste (done by the service center).

Idk what else I could do to fix it. I really need help.