The PC fails to power on?
The PC fails to power on?
I assembled a desktop PC in August 2019. Over the past two months, while it was operational, the video display would suddenly stop, for instance when I was streaming YouTube. The video continued playing due to acceptable audio, but the monitor would shut off with a "no signal" message. Restarting resolved the issue consistently. Ten days ago it failed to power on completely. It occurred again later, then sometimes worked after some time. Now it is completely unresponsive and does not boot at all.
I attempted to power it directly using MOBO's power connectors. I rearranged the RAM modules in different slots, tried both the original and single RAM sticks, and even connected a single RAM stick. I powered it on straight from the pins without using the UPS. Still, nothing worked. There is a faint sound—like a TING or TICK—when I turn it on, but it remains inactive regardless of method. I considered replacing the PSU, but wondered if MOBO, the CPU, or both might be missing. Any suggestions?
PSU:
Corsair TXM850
Graphics Card:
Asus Radeon RX Vega 64
It might help to obtain two components, either by borrowing or not purchasing them. One should be a well-built PSU with a minimum of 750W for the entire system, and see if that restores the system or display. The other part can be a separate GPU.
You can eliminate these two items from your build as potential causes.
I also tried removing the graphics card and the CPU. In both attempts, there was no beep. I assumed MOBO was missing. I had to extract the MOBO from the case to remove the CPU due to its design. I placed it on cardboard for testing since I was worried about it possibly touching the case and causing a short circuit. All tests performed similarly on the cardboard. One thing to note is that the TICK/TING sound I mentioned earlier comes from the power supply unit. This suggests either the PSU or MOBO is missing. The rest of the components are still intact.
If the LEDs on the GPU card appear weaker, it suggests the 12V supply is significantly below its rated level. The +12V rail should fall within +11.4V to +12.6V.
Using a multimeter with Molex connectors, set it to the 20V DC range, making sure the positive lead connects to the yellow wire on the Molex and the negative to the black wire. If the reading is below +11.4V, consider replacing the PSU.
Also verify the +5V rail (red wire) on the Molex connector, which should sit between +4.75V and +5.25V. Basic multimeters are affordable.
The 3700X lacks an iGPU, so a beep error code likely wouldn't come from it alone. Generally, the CPU must be connected to function properly, even without the GPU or RAM.
Removing all DIMMs and restarting can help if issues persist, assuming the BIOS misinterpreted a fault in one of the DIMMs.
I placed an order for this PSU tester, expecting delivery within five days. I'll review it and get back to you. You can find the product here: https://www.amazon.in/gp/product/B0C7V89Y13/
I am receiving these items at a favorable cost:
https://www.amazon.in/Antec-CSK750H-Bron...09CYND2K9/
https://www.amazon.in/CORSAIR-thermally-...0CRKKDF88/
https://www.amazon.in/Cooler-Master-Bron...08H1ZC76Q/
Also, I have the Ante Atom B750:
https://www.flipkart.com/antec-atom-b750...c98b52d035
In fact, Amazon India offers a wide range of options. Here’s what I discovered:
https://www.amazon.in/s?k=750w+psu&i=com...-doa-p_1_4
UPDATE: I found a Reddit thread suggesting the Antec B series might not be reliable:
https://cultists.network/140/psu-tier-list/
I recently purchased an inexpensive PSU tester featuring an LCD display, along with my standard multimeter. Please note these devices do not apply substantial power to the PSU. Unlike a multimeter that measures on-load voltages, these only show "open circuit" (off-load) readings. They don’t deliver a meaningful load of several hundred watts onto the +12V and +5V rails, making them suitable only as a general indicator of the PSU’s condition.
Currently can't afford buying any computer part more than 5-6K. I can, if I wait 2 months though. Also, this build is already 5 years old, so I will discard this after 2 years (or 3 at max) and build a new one.
First, there is another problem, we don't know yet if MOBO or CPU has issues too. So, putting 10K is a lot too in this context.
Second, I don't do gaming, I only do browsing, computer programming, watch some 4K movies/videos and YouTube. So, there is not much consumptoion e.g. RX Vega 64 has only used at max 4GB VRAM in last 5 years (as per what "
radeontop
" displays), and that too only like 10% of the times. Rest 90%, it's more like 2 GB . I think it's same for GPU usage too, I never heard fans running at full speed.
But I do get the part where you are talking about quality. So , I can wait 2 months.