PC starts only after the fourth attempt if CPU overclock is enabled.
PC starts only after the fourth attempt if CPU overclock is enabled.
Hello, I’m facing a rather unusual issue here.
My computer only powers up after the fourth attempt, which triggers a BIOS reset. It starts from the default settings and functions properly once overclocking is set after the initial boot (verified through Aida, Cinebench, and Blender tests). The main issue arises when I enable CPU overclock – it fails to boot at all.
Configuration details:
I9-9900KF
Z390 Aorus Elite
Corsair TX750M
Asus Strix GTX 1070
2x8GB 3200mhz Corsair Vegeance RGB Pro CL 16
Testing results:
- Booting with default options (stressing CPU with defaults) results in a BSOD, though that’s another matter.
- Booting with XMP enabled at 3200mhz works normally.
- Enabling CPU overclock at 4.7GHz, 1.23v and LLC Turbo causes the PC to fail to boot – only after the BIOS resets.
This problem has been present since the PC’s assembly, but it didn’t affect me before because overnight power loss didn’t cause issues. Now, without a reset, it doesn’t start at all.
Also, I have a red LED that lights up when the PC shuts down.
Apologies for any grammar errors.
Have you experimented with increasing the CPU voltage slightly? When powering up any electronic device, it consumes more energy initially, and voltage might decrease during steady operation. After testing, capacitors seem to charge completely and then function properly.
Your really not even overclocking at 4.7 since that processor already has a all core boost speed of 4.6. If your just after 4.7 their no reason to overclock for a mere 0.1.
I would agree to increase your Vcore voltage.
How do you increase performance after the computer starts up? Using the Asus Turbo tool to tweak BIOS settings usually helps when running an operating system. It often doesn’t affect boot processes at all. At startup, the whole system is under significant stress—storage, RAM, and all board components like PCIe hubs and SATA controllers are working hard. Even if you see fans spinning faster, CPU and GPU temperatures remain elevated compared to idle. Imagine an air conditioner turning on: it draws a lot of power initially to start the compressor and fan, then becomes quieter and uses much less energy once running smoothly. The same applies during boot. Your PC’s software optimization tools aren’t strong enough to cope, so after the fourth startup, BIOS automatically resets to the last stable configuration. If you’re aiming for a better performance boost, consider enabling MCE in BIOS if cooling is adequate; otherwise, software tweaks rarely deliver the expected results.
Increased CPU vCore to 1.45v but still not booting (only on the fourth attempt).
Adjusted CPU Multiplier to 47 since auto mode causes BSOD due to insufficient power, which triggers LLC turbo. Also, last night I set vCore to 1.45v with multiplier 1.24 and Turbo Load Line.