PC beeps on startup

Well, since I couldn't find a single thread addressing this specific headache, I suppose I've had to start one myself—honestly... when I boot the computer up, everything seems fine at first glance, but there's absolutely no beep—that initial POST beep, you know?—and because my motherboard and graphics card are both brand new, the silence is just... unsettling. It leaves me with this nagging feeling that something is fundamentally wrong. And frankly, it might be, because I’ve been dealing with this recurring nightmare where the screen just goes black—though the backlight stays on—and the entire system freezes solid, keyboard, mouse, everything... leaving me totally stranded. I have to force a shutdown every single time, only for it to work perfectly fine once I restart. This has happened three times in just one week! Does anyone actually know if this is a real issue? Is there some setting in the BIOS to enable the beep, or am I looking at a hardware failure? Someone please, I need an answer! My specs are: Motherboard: ASROCK B75 M-GL - 2.0, GPU: NVIDIA GeForce GTX 750 Ti, RAM: 4GB Kingston DDR3 1300, CPU: Intel Core i3-2100 dual core, 2.9 GHz, PSU: Corsair 580W, HDD: 1TB, SSD: 60GB

So, do you actually have a speaker connected to your motherboard? Maybe try popping the case open just to check...

It’s connected—just like in that other photo you posted—and it technically works... but it fails right when it actually matters—you know, during the boot sequence!

It isn't strictly necessary for a computer to emit that specific "beep" code during the boot sequence; in my estimation, you might be looking at an entirely different issue altogether than the one you've initially suspected.

Does your PC freeze during specific tasks, or is it just totally random?
Listen, if I were you, I’d start by checking the temperatures of each component individually to see how they're holding up... one by one.
Here's a link to a benchmarking tool.

The temperatures are just brilliant: CPU at 32, GPU at 28, motherboard at 27, HDD at 32, SSD at 23... and yet the whole thing freezes up on me regardless of what I'm actually doing—it didn't freeze a single time yesterday, and it hasn't frozen once today—but tomorrow? Who knows!

Good grief, do you keep the devil in your refrigerator or something? 👍
On a serious note, did this issue start right after you swapped out the motherboard and the GPU? I suspect the older components might not be playing nice with the new hardware... 🤔

Peter Morgan3 said:Good grief, what are you doing—keeping that thing in a refrigerator? 👍
Look, seriously though—did this whole mess start right after you swapped out the motherboard and the GPU? I’m thinking maybe those older components just aren't playing nice with the new gear... 🤔

Well, the only things actually "old" here are the 1 TB hard drive—which is about two years old—along with the CPU and the power supply. Everything else is basically brand new, just a week old! And as for those temperatures... they're fine because I've got solid cooling on both the processor and the graphics card.
Actually, things were even worse before, which is exactly why I replaced the motherboard—plus, my old card was just an NVIDIA GeForce GTX 460 OC with dual fans.

Why don't you try downloading MemTest86 and running a quick scan on your RAM? It’ll be a good way to see if we can catch any errors hiding in there.

http://www.memtest.org/#downiso

Larry Ortiz5 said:Just download MemTest86 and run a full scan on the RAM—see if you can catch any errors there.

http://www.memtest.org/#downiso

Look, I already did that a few days ago... ran the tests and didn't find a single error in the memory. And just to be absolutely certain—because why not?—I even swapped in a brand new 4GB stick of A-Data 1600 DDR3, but the exact same thing happens... nothing changed. The only thing left on my list is testing the power supply, but I don't have a spare unit lying around to swap in!

Which version of macOS are you running? Also, did you bother reinstalling the OS after swapping out the motherboard and the GPU?

Hey, look, just grab the manual for your motherboard—if you don't have the physical copy lying around, just pull it up online—and check what that specific beep code actually means. Like, is it a single "beep," a quick "beep-beep," or just one long, continuous "beeeeeeeep"?
Honestly, I don't get why everyone is overthinking this so much, because shouldn't the manual clearly state exactly what every single beep code signifies? Just go check that first, and it'll make everything else way easier instead of us all just guessing blindly in the dark here.
(Wait, hold on, am I totally misreading the situation—are you saying there's no beep at all???????) Anyway, just to jump off what was said above... maybe see if the manual mentions what it means if there's no beep when you power it up, or conversely, what it means when a beep actually triggers during startup. That's really your first step.
People always start messing around with the BIOS settings, but let's be real, a computer doesn't necessarily have to make any sound at all when it boots up.

Check your BIOS settings. What is the 12V rail reading?
Alternatively, grab a multimeter and test the yellow and black wires on the power supply connector.
Under load, that voltage shouldn't dip below 11.4V.
Since the BIOS only shows a light load, if you see 11.6V there, I'd say your PSU is failing.
Don't just assume it's the power supply. Test it first.

Roger Gray8 said:Look, just open the manual for your motherboard—and if you don't have it lying around, find it online—and figure out what that "beep" actually signifies... I mean, is it a single "beep," a "beep-beep," or a long, drawn-out "beeeeeeeep"?
I honestly don't understand why everyone is overanalyzing this—it should be clearly stated in the manual exactly what each specific beep code means. Just check that first, and then you'll have a path forward instead of just blindly poking around at nothing.
(Or wait, am I misinterpreting you? Are you saying the beep is missing entirely???????) — To follow up on that point above... see if there's anything mentioned about whether a beep is required during startup, or what it means when a beep *does* occur at boot. Study that first.
They can mess around in the BIOS all they want, but I know for a fact a computer doesn't necessarily have to beep when it turns on---

The issue isn't the startup sound; it's that whenever an error occurs during an operation, it's supposed to trigger a short beep immediately. It’s driving me absolutely crazy because it used to make that sound, and now it just doesn't...

John Turner34 said:Check the BIOS settings to see what that 12V rail voltage is actually sitting at.
Or just grab a multimeter and test the yellow and black wires somewhere along the power supply line...
It shouldn't be dropping below 11.4 volts while the PC is under a heavy load.
Now, when you're just sitting in the BIOS, there isn't much of a load—so if the BIOS shows something like 11.6 volts, I'd say your PSU is starting to give up the ghost.
Don't just guess and assume it's the power supply; you have to actually measure it to know for sure.

I went ahead and did that in the meantime, and turns out the 12V rail wasn't even close to 12—it was sitting at a measly 9.5! I immediately jumped to buying a new power supply—a 500W Corsair— $167 which is an 80+ Bronze unit, just for kicks. I swapped out the old one, fired up the rig, and—beep!—just a single short beep like it's supposed to be. Problem solved! Thanks everyone for the help, the answers, and all the effort... even if the extra expense wasn't exactly something I wanted to deal with right now, when it's necessary, you just gotta do it! Now everything 👏👏: 👍 is running perfectly!
p.s.: I used a digital meter to check it, and that's what it showed me. Whether the reading was 100% precise or not doesn't really matter at this point—the computer is working fine now!