u/Delicious_Raccoon504

Hello everyone, I have an Alienware R3 17" PC with a Core i7 processor and an Nvidia GeForce GTX 9800M graphics card, 16Go RAM, Windows 11 proand I've noticed a problem. The computer crashes completely suddenly about 3 minutes after startup. Nothing on the screen moves, but the keyboard backlight continues to blink and change color. When I reinstall the system, it stops crashing completely, but it starts again about 7 to 8 days later. At first, when I went into system configuration and disabled certain drivers, it didn't crash, but now it crashes even after disabling them. There are no crashes in safe mode either. I'd like to understand what's wrong with my PC and fix it.