The computer fails to power on, showing no display or input/output functionality.
The computer fails to power on, showing no display or input/output functionality.
Your computer starts up with fans and GPU lights but no display or power for keyboard/mouse. This occurs unpredictably. When you manage to connect it, it shows overclocking failed and returns to original settings even without overclocking. Restarting with default optimized settings doesn’t fully power it on, only restarting every two seconds.
What I’ve tried: changed CMOS battery, reinserted RAM, used different RAM slots, swapped GPUs, asked for help.
Details:
CPU: i5-4690k
Motherboard: MSI Gaming G45
GPU: Gigabyte Windforce GTX 970
Power Supply: EVGA 750 B2
RAM: 8GB Kingston HyperX
It seems the motherboard or PSU is faulty and I can't recall B2. Do you have a self-tester with EVGA B2? If not, consider borrowing or purchasing a digital multimeter to check the PSU output.
I removed the battery and held the case's power button for 5 seconds, then waited 15 minutes to reset the CMOS completely. After reinstalling the battery and turning it on, I entered BIOS, adjusted the time and date, and set the default/optimal values, saving and exiting.
If this doesn't work, you may need to manually adjust settings:
- Access BIOS and locate energy-saving options (usually labeled EIST/C10 under ACPI).
- Disable CPU VID, set it to 1.2 with a tolerance of ±0.5 V.
- Turn off XMP support and rely on auto for DRAM settings.
- Configure BLCK to 100MHz.
It seems the motherboard or PSU is faulty, and I can't recall B2. Do you have a self-tester with EVGA B2? If not, consider borrowing or purchasing a digital multimeter to check the PSU output.
I removed the battery and held the case's power button for 5 seconds, then waited 15 minutes to reset the CMOS completely. After reinstalling the battery and turning it on, I entered BIOS, adjusted the time and date, and set default/optimal values before saving and exiting.
If this doesn't work, you'll need to perform manual adjustments:
- Open BIOS, locate energy-saving settings (often labeled EIST/C10 under ACPI), ensure it's disabled.
- Set CPU VID to 1.2 with a tolerance of ±0.5 V.
- Disable XMP if present, and use auto for the rest of the DRAM configuration.
- Configure BLCK to 100MHz.
These steps match what my customer requires for warranty support.