F5F Stay Refreshed Hardware Desktop Fresh installation. Basic setup appears working, but no BIOS display or monitor output.

Fresh installation. Basic setup appears working, but no BIOS display or monitor output.

Fresh installation. Basic setup appears working, but no BIOS display or monitor output.

A
AcidixBlitzHD
Member
200
09-21-2025, 07:24 AM
#1
I just got the new case and nothing appears on my screen. I’ve never built a computer before and don’t have much experience. When I power on the power supply, the fans and RGB lights start up, but not when I press the switch on the case itself—my mind is confused about whether the wiring is correct (see photos). The CPU cooler fan also works, yet the monitor remains blank. I’ve attached pictures of the power cables and LED connections, showing how they’re connected. I’m using both HDMI and USB ports, thinking it should work with Bluetooth mouse and keyboard. The screen says to press a key or move the mouse briefly before standby, but with a wireless device that isn’t paired yet, how do I trigger that? Maybe a wired keyboard would help? I thought the BIOS would show up when I power on the whole system. It’s really frustrating. I’ve been dealing with a tough time lately—two months after a stressful Christmas surgery. I know I shouldn’t have skipped the case for savings, but I didn’t have the budget for something better. Just wanted to let you know I’m struggling and would really appreciate any advice. Thanks a lot.
A
AcidixBlitzHD
09-21-2025, 07:24 AM #1

I just got the new case and nothing appears on my screen. I’ve never built a computer before and don’t have much experience. When I power on the power supply, the fans and RGB lights start up, but not when I press the switch on the case itself—my mind is confused about whether the wiring is correct (see photos). The CPU cooler fan also works, yet the monitor remains blank. I’ve attached pictures of the power cables and LED connections, showing how they’re connected. I’m using both HDMI and USB ports, thinking it should work with Bluetooth mouse and keyboard. The screen says to press a key or move the mouse briefly before standby, but with a wireless device that isn’t paired yet, how do I trigger that? Maybe a wired keyboard would help? I thought the BIOS would show up when I power on the whole system. It’s really frustrating. I’ve been dealing with a tough time lately—two months after a stressful Christmas surgery. I know I shouldn’t have skipped the case for savings, but I didn’t have the budget for something better. Just wanted to let you know I’m struggling and would really appreciate any advice. Thanks a lot.

I
ItsSpanky
Member
176
09-21-2025, 07:42 AM
#2
Examining the image with your power LED and power button connector, you'll notice they're arranged differently. The correct setup has a + at the power button connector and a - on the power LED pins. The bottom-right pin of pwr_led should connect to one pin, indicating a single connection. Make sure to verify the disk activity details with your mainboard.
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ItsSpanky
09-21-2025, 07:42 AM #2

Examining the image with your power LED and power button connector, you'll notice they're arranged differently. The correct setup has a + at the power button connector and a - on the power LED pins. The bottom-right pin of pwr_led should connect to one pin, indicating a single connection. Make sure to verify the disk activity details with your mainboard.

S
SimpleBuilder
Member
134
09-21-2025, 07:57 AM
#3
Your POWER SW must be positioned at the location with the POWER LED or +
S
SimpleBuilder
09-21-2025, 07:57 AM #3

Your POWER SW must be positioned at the location with the POWER LED or +

L
183
09-24-2025, 05:39 PM
#4
Great! Your prompt response is appreciated. I'm ready to proceed.
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LupusGladiator
09-24-2025, 05:39 PM #4

Great! Your prompt response is appreciated. I'm ready to proceed.

J
JoloYolo
Member
205
09-25-2025, 12:44 PM
#5
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JoloYolo
09-25-2025, 12:44 PM #5

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MrAski
Junior Member
20
09-25-2025, 02:11 PM
#6
This resolves the Switch issue, thank you. On the screen it displays “Press any Key” etc. (see image below). I only have a wireless keyboard and mouse. Is there really no need for a wired one to fix it?
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MrAski
09-25-2025, 02:11 PM #6

This resolves the Switch issue, thank you. On the screen it displays “Press any Key” etc. (see image below). I only have a wireless keyboard and mouse. Is there really no need for a wired one to fix it?

H
Hermitt
Member
149
10-02-2025, 11:02 PM
#7
Typically inside the lid for the batteries, there’s a USB dongle to connect your keyboard or mouse to your computer. Look for it? Battery lid on the keyboard and mouse. If you spot a USB port, insert it in. A combo pack will handle both, but if not, use one USB dongle for the keyboard and another for the mouse.
H
Hermitt
10-02-2025, 11:02 PM #7

Typically inside the lid for the batteries, there’s a USB dongle to connect your keyboard or mouse to your computer. Look for it? Battery lid on the keyboard and mouse. If you spot a USB port, insert it in. A combo pack will handle both, but if not, use one USB dongle for the keyboard and another for the mouse.

M
Madlock_
Member
127
10-06-2025, 04:25 AM
#8
I don’t have one, but your concern makes sense. I’m unsure if over-tightening the CPU cooler caused any harm based on your experience. Could this issue be common or rare? The current setup shows the power LED top left, a switch beside it on the right, and an HDD LED at the bottom left as described. Are there additional wires required for booting, such as RES, CI, SPEAK, PWR LED, etc.?
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Madlock_
10-06-2025, 04:25 AM #8

I don’t have one, but your concern makes sense. I’m unsure if over-tightening the CPU cooler caused any harm based on your experience. Could this issue be common or rare? The current setup shows the power LED top left, a switch beside it on the right, and an HDD LED at the bottom left as described. Are there additional wires required for booting, such as RES, CI, SPEAK, PWR LED, etc.?

D
DengeliOda
Member
228
10-22-2025, 05:56 PM
#9
@Banjoko – about the "no signal" issue on your screen. Your monitor cable is connected to the motherboard, not the GPU. The 5800X3D lacks built-in graphics; you must use a separate dedicated graphics card.
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DengeliOda
10-22-2025, 05:56 PM #9

@Banjoko – about the "no signal" issue on your screen. Your monitor cable is connected to the motherboard, not the GPU. The 5800X3D lacks built-in graphics; you must use a separate dedicated graphics card.