PC ''boot error''
PC ''boot error''
R5 4600g
RM850e psu
B550M AORUS ELITE
When I power on my PC, the CPU and case fans activate, but the LED lights stay off. The mouse and keyboard remain unlit. The monitor fails to receive a signal, leaving only the option to shut down the system.
Occasionally, it boots successfully. I see the motherboard logo appear on the screen, and both the keyboard and mouse light up before the PC restarts repeatedly until I remove the socket.
There’s a 1% chance the PC will boot normally and function as if nothing unusual occurred. That’s why I kept the system running for several months. I performed stress tests for a few hours without any problems.
At times, it boots into BIOS with an error message saying "boot error." When the PC is operational, I notice error alerts such as "secure boot failed to update."
To resolve this, I removed the GPU and connected an HDMI cable directly to the motherboard. I then installed a new SSD using fresh Windows, but it didn’t work. I also tried adding RAM sticks one by one without any improvement.
What’s malfunctioning?
It could be many different issues. Because accessing the BIOS isn't possible, I'd begin replacing parts individually. This would be tough or impossible without a compatible donor system. Consider swapping out RAM, the GPU, and the power supply unit. It might help to take out all the RAM and then turn on the machine; this can trigger a response when memory detection fails. This technique is useful if an overclock has failed and BIOS resets don't work. Check if your motherboard is dead or failing—ESD damage during setup could cause silent faults that appear years later. Make sure the CPU cooler fan is connected to the correct header on the motherboard. If the BIOS flags a failed fan, the system will shut down. When you return to the BIOS, turn off XMP and attempt installation with Secure Boot disabled (and possibly TPM turned off). It adds another layer of complexity to troubleshooting.
R5 4600g (possibly intended for mining, not certain.)
RM850e psu (warranty remaining: 6 years)
ram 2x8gb generic hyenix 3200mhz
b550m aorus elite (approximately 1.5 years left on warranty)
Gpu is an rtx 3060 but it's not connected and issues persist, I replaced the original ssd with a new one,
Biols has the most recent update, though it may have been reset, as I removed the mobo battery, drained the system power, and applied some bios reset options, so I can't be sure.
R5 4600g
2x8gb 3200 hynix
Corsair rm850e
B550M-AORUS- ELITE - Gigabyte
Most of the time the PC won’t boot, but when it does, it functions properly.
Upon startup, there’s no display signal, mouse and keyboard lights remain off, yet the CPU and case fans spin while LED indicators activate.
Mobo has been tested without issues; an SSD was swapped out and Windows 11 installed, yet the issue persists.
Which hardware component do you suspect is responsible?
*ram
*cpu (possibly for mining)
*psu (5 years warranty remaining)
Hdmi cable connected to the motherboard. All cables are correctly plugged in and positioned. The PC operates normally during stress tests. The main concern remains booting. Once, BIOS reported a boot error.*
This time I noticed monitor glitches, which reminded me of my failing GPU from ten years ago.
R5 4600g
2x8gb 3200 hynix
Corsair rm850e
B550M-AORUS- ELITE - Gigabyte
Most of the time the PC won’t boot, but when it does, it functions properly.
Upon startup, there’s no display signal, mouse and keyboard lights remain off, yet the CPU and case fans spin while LED indicators illuminate.
Mobo has been tested without issues; I swapped the SSD and installed Windows 11, but the problem persists. I also tried a different RAM stick without success, though I didn’t attempt the other one.
Which component do you suspect is responsible for the issue?
*ram
*cpu (possibly used for mining)
*psu (has 5 years warranty remaining)*
HDMI cable is connected to the motherboard. All cables are properly connected and positioned correctly. The PC operates normally during stress tests. The main concern remains the boot process, which BIOS reported as an error.
Last time I noticed glitches on the monitor—it reminded me of my failing GPU from ten years ago.