PC won’t boot anymore (CMOS cleared already)
ThSno
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ThSno -
ThSno -
Hello/Good evening,
My PC has gone into hibernation (that's what it's called when it turns off by itself after a certain period, right?), but since then, I can't restart it. I'm aware that this post addresses a recurring issue on this kind of forum, but I haven't managed to resolve anything after trying multiple manipulations.
To start, I pressed the Power button, the machine powered up (lights and fans), but after a few seconds, it shut down without a single beep. Having had a similar case in the past, I tried to get rid of any residual electricity by holding down the Power button for 30 seconds while the power supply was on but unplugged (switch on). This allowed the Power button to make that usual "click" when pressed, and the machine restarted, only to shut down again after a few seconds, without a beep, so I'm back to square one. I should mention that nothing appears on the screen, so I can't even access the BIOS.
Following other topics in French and English, I attempted a CMOS clear by removing the battery for a while, and I also tried with a new battery, but that made no difference.
Moreover, between each manipulation, when I reconnect to test, the machine attempts to start as soon as the power supply is plugged in, without me touching anything, and of course, it stops again after a few seconds, without a beep.
Next test, I tried removing all the excess components, including the graphics card, but there was no change. However, when I removed the RAM sticks, I got the long beep alerting me to a RAM problem. I tested with one stick (changing it) or with all of them, but no matter what I do, I return to my starting point. The graphics card, RAM, SSD hard drives, and power supply are all relatively new (a few months at most) and from reliable brands (Corsair, Kingston, etc.), and everything was still working perfectly this afternoon. It's really since it went into hibernation that nothing is going right, and if I'm posting here, it's because I'm completely out of ideas and have exhausted all the tricks I could find in other posts.
I hope someone can help me resolve this issue that came out of nowhere... I use this PC daily for very long sessions, without ever encountering problems. And now I can't even identify the source of the issue. I don't feel like it's serious since I've had similar symptoms a long time ago, which were fixed by draining the residual power or performing a CMOS clear. What's different this time?
Best regards.
My PC has gone into hibernation (that's what it's called when it turns off by itself after a certain period, right?), but since then, I can't restart it. I'm aware that this post addresses a recurring issue on this kind of forum, but I haven't managed to resolve anything after trying multiple manipulations.
To start, I pressed the Power button, the machine powered up (lights and fans), but after a few seconds, it shut down without a single beep. Having had a similar case in the past, I tried to get rid of any residual electricity by holding down the Power button for 30 seconds while the power supply was on but unplugged (switch on). This allowed the Power button to make that usual "click" when pressed, and the machine restarted, only to shut down again after a few seconds, without a beep, so I'm back to square one. I should mention that nothing appears on the screen, so I can't even access the BIOS.
Following other topics in French and English, I attempted a CMOS clear by removing the battery for a while, and I also tried with a new battery, but that made no difference.
Moreover, between each manipulation, when I reconnect to test, the machine attempts to start as soon as the power supply is plugged in, without me touching anything, and of course, it stops again after a few seconds, without a beep.
Next test, I tried removing all the excess components, including the graphics card, but there was no change. However, when I removed the RAM sticks, I got the long beep alerting me to a RAM problem. I tested with one stick (changing it) or with all of them, but no matter what I do, I return to my starting point. The graphics card, RAM, SSD hard drives, and power supply are all relatively new (a few months at most) and from reliable brands (Corsair, Kingston, etc.), and everything was still working perfectly this afternoon. It's really since it went into hibernation that nothing is going right, and if I'm posting here, it's because I'm completely out of ideas and have exhausted all the tricks I could find in other posts.
I hope someone can help me resolve this issue that came out of nowhere... I use this PC daily for very long sessions, without ever encountering problems. And now I can't even identify the source of the issue. I don't feel like it's serious since I've had similar symptoms a long time ago, which were fixed by draining the residual power or performing a CMOS clear. What's different this time?
Best regards.
6 réponses
Hi,
try to start with the minimum components, that is:
- power supply connected + motherboard + processor and cooler + 1 SINGLE RAM STICK + screen connected to the VGA port (if it exists on the motherboard and on your screen) AND THAT'S IT!!
>>> no graphics card connected, no SSD, no hard drive, no reader/burner, no mouse, no keyboard, no USB stick, no memory card
Press the power button >> do you see the BIOS/UEFI or a message on the screen like "NO BOOTABLE DEVICE, PRESS ANY KEY"
@ later
--
If you need anything, just let me know!...
try to start with the minimum components, that is:
- power supply connected + motherboard + processor and cooler + 1 SINGLE RAM STICK + screen connected to the VGA port (if it exists on the motherboard and on your screen) AND THAT'S IT!!
>>> no graphics card connected, no SSD, no hard drive, no reader/burner, no mouse, no keyboard, no USB stick, no memory card
Press the power button >> do you see the BIOS/UEFI or a message on the screen like "NO BOOTABLE DEVICE, PRESS ANY KEY"
@ later
--
If you need anything, just let me know!...
1) with the power supply off and the power cable unplugged,
2) with the power supply off and the power cable plugged in,
3) with the power supply on and the power cable unplugged
But it made no difference. I tried several times holding the Power button for 5 seconds, 10 seconds, 15 seconds, then 30 seconds. The reason I did all these attempts is that sources sometimes contradict each other. I even wanted to try the trick with the hairdryer, even though it seems absurd to me, but again, no difference.
Finally, I tried with the minimum components and that didn’t change anything either. The LEDs light up for a moment, the fan runs, and then it stops again and automatically restarts as soon as it's plugged into the power, without me even having to press the Power button...
I also tried removing the CMOS battery, but I kid you not, no difference. However, when the power supply is on (switch at the back) and plugged into the power, I seem to hear a very faint continuous buzzing (once the PC has stopped, I mean).
So am I definitely doing it wrong to discharge the residual power? Is the power supply stuck in safety mode? Has it already given up the ghost even though it’s relatively new and from a good brand? There hasn't even been a power outage to my knowledge, or at least nothing before I turned off the PC last night to go to sleep. It was this morning when I woke up that I noticed it wouldn’t turn on anymore.