Fans are running. No signal. Help needed.

hikakinv3
Junior Member

04-22-2025, 08:31 PM

My PC was functioning normally until recently,
The fans were lighting up and operating but there was no signal at all,
The keyboard wouldn't light up, the mouse didn't respond, and the graphics card also failed to send any signal.
What's happening? 😭
I've tried several fixes:
- Replaced the CMOS battery and reinserted it
- Removed and reinstalled the CPU, reapplied thermal paste, then reinstalled
- Disconnected the GPU and used integrated graphics via HDMI to the motherboard
- Swapped out one RAM stick and ran with just one, still no improvement
None of these solutions worked; the PC powers on but the GPU runs at maximum fan speed with no signal from the system.
Any advice?

hikakinv3

04-22-2025, 08:31 PM #1

Siloux
Junior Member

04-22-2025, 08:31 PM

Have you experimented with using a single stick of RAM sequentially?

Siloux

04-22-2025, 08:31 PM #2

Have you experimented with using a single stick of RAM sequentially?

CaptainCraft03
Junior Member

04-22-2025, 08:31 PM

Yes I did that too

CaptainCraft03

04-22-2025, 08:31 PM #3

Yes I did that too

Frkymstr
Junior Member

04-22-2025, 08:31 PM

I think your motherboard might be dead. Try disconnecting all external devices like the keyboard, mouse, and SSD to check if it improves.

Frkymstr

04-22-2025, 08:31 PM #4

I think your motherboard might be dead. Try disconnecting all external devices like the keyboard, mouse, and SSD to check if it improves.

trandat
Member

140

04-22-2025, 08:31 PM

Has it died? That might explain why your GPU and CPU fans are spinning fast.

trandat

04-22-2025, 08:31 PM #5

Has it died? That might explain why your GPU and CPU fans are spinning fast.

KingJjpr
Member

214

04-22-2025, 08:31 PM

However, the motherboard lights remain active, and even when all external devices are removed, no signal reaches the monitor while the fans operate at maximum speed.

KingJjpr

04-22-2025, 08:31 PM #6

However, the motherboard lights remain active, and even when all external devices are removed, no signal reaches the monitor while the fans operate at maximum speed.

JordyMc1
Junior Member

04-22-2025, 08:31 PM

Use a different video card and test the motherboard graphics.
Get another power supply, as the one you have is faulty.

JordyMc1

04-22-2025, 08:31 PM #7

Use a different video card and test the motherboard graphics.
Get another power supply, as the one you have is faulty.

lewmas17
Member

04-22-2025, 08:31 PM

I've already tested all these possibilities.
It seems like this is the sole power source I have, and I'm struggling to find another one.
Is the issue with the motherboard or the PSU?

lewmas17

04-22-2025, 08:31 PM #8

I've already tested all these possibilities.
It seems like this is the sole power source I have, and I'm struggling to find another one.
Is the issue with the motherboard or the PSU?