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Questions tagged [power-supply]

A power supply is an electronic device that supplies electric power to another device, such as a computer, monitor or printer. This is achieved by converting wall power (or mains power) to a lower voltage, and in most cases also from AC to DC. Most power supplies also provide protection from overload, power surges and other potentially problematic or hazardous conditions.

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How to interpret 'number of connectors' in Corsair PSU manual?

I have slight difficulty in understanding ‘Total Connectors’ number as mentioned in Corsair PSU manuals. More specifically the EPS connector. Some of the newer power hungry boards & CPUs now need ...
ramki's user avatar
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Why does my VGA adapter still work without power?

I bought a VGA to HDMI adapter here https://www.amazon.com/dp/B08GZ159FJ/ and for some reason it still works without the power cable being attached to the adapter. My intention was to partner it with ...
user9564371's user avatar
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Additional 4-pin power connector on motherboard [closed]

Do I need to connect the ATX12V 4-pin power connector in addition to the standard EPS12V 8-pin power connector on my motherboard? If not, will damage result if I do?
Marty Nelson's user avatar
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Internal Compiler Error: Segmentation Fault

I am getting the following error every time I try to build or make a package: In file included from /usr/include/gz/math7/gz/math/AxisAlignedBox.hh:25, from /home/jjayalekshmi/gz-...
user14990613's user avatar
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press F1 to boot after restart (920-fan command 2 pin connector from power supply not connected)

setup: old HP d530 SFF(DK907A) Pentium4, running Fedora 8, power supply 500W HPQ-500BR-H12S, HP P6B580 motherboard (I will attach some photos as well) problem: I have to press F1 to boot after PC ...
Hazel Martin's user avatar
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2x4, for ATX PCIe socket same polarity as VGA 6+2 socket?

I have an FPGA that I would like to connect using PCIe to a host computer. This FPGA board, the VCK190, has a power socket for PCIe. I have a PCIe power cable with the typical VGA 6+2 interface. ...
lazerbeam's user avatar
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60 views

Why are my PSUs dying immediately?

I decided to upgrade one of my systems. It was running fine, but the 10-year-old motherboard was underpowered. The power supply was a Corsair AX760, which had about one year of service. I left the PSU,...
Mike Slinn's user avatar
6 votes
1 answer
256 views

Why is pin 8 on the 2x4 PCIe cable plug notched usually?

This is not about EPS 8 pin look carefully before flagging for that. Let's look at a 8 pin PCI Express cable plug. One row has three notched connectors and one square. The problematic pin is on the ...
chx's user avatar
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Standard PSU (on HP G1 600 SFF) power adapter to modern 24 pin motherboard

I would like to put in a new motherboard in my system and was wondering if there's an adapter for the current PSU from HP (which seems to have 2 six-pin connectors, and 1 four-pin connector https://...
Thomas Herold Jr's user avatar
1 vote
1 answer
103 views

Is it safe to connect only 2 PCIe 8-pin power connectors to triple PCIe 8-pin to 12VHPWR adapter?

I have a GPU with a 12VHPWR connector that came with a 3xPCIe 8-pin to 16-pin 12VHPWR adapter cable, but my current PSU only has 2 PCIe 6+2 pin connectors on the same cable. Is it safe for me to power ...
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Is it okay that the power LED blinks 8 to 9 times as soon as I press the power button and then stays on steadily? Motherboard: ASUS B460M-A

I recently got an Asus B460M-A. (The one that only supports 10th generation Intel). It worries me because as soon as I press the power button, the power LED flashes quickly 8-9 times (no video here), ...
Clever Requena's user avatar
1 vote
1 answer
52 views

Computer was running until accidentally plugging speakers absent external power into the line in jack. No boot, what happened? [closed]

I built a new PC and everything was working. After swapping parts (continued working) I noticed that my AUX jack from the speakers had broken. I couldn’t splice because it had broken in the middle of ...
Prometheus Prime's user avatar
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Will this right angle PCIe 5 power adaptor work with the RTX 4070 Super?

I'm building a small form factor PC in the Fractal Terra case. I am using the Asus RTX 4070 Super GPU and the included PCI adapter is too tall and I can't put the lid of the case: I found this: https:...
Swisher Sweet's user avatar
-2 votes
1 answer
44 views

My laptop (a Dell Inspiron) has started boot looping after I Connected a 12v power source to my Arduino that was connected to my laptop [closed]

My Dell Inspiron has started boot looping after I connected a 12v power source to my Arduino that was connected to my laptop. I was trying to run a DC motor using the L293D motor controller, and I was ...
cogrow4's user avatar
-1 votes
1 answer
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Dell Inspiron 15 power cable port is loose; what are my options?

My Dell Inspiron 15 laptop power cord has been yanked and jerked so many times that the interior plug has come loose, and now it is increasingly difficult to plug in the power cord. (I suppose that's ...
mrtoddly's user avatar
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1 answer
41 views

Laptop needing a more powerful power supply?

I have chosen a laptop to use both for university use and gaming: Lenovo Yoga Pro 9 16IMH9. It is quite expensive and has great specs and features, but unfortunately has a major flaw. According to one ...
Staxis17's user avatar
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Will some laptops not boot without the proper charger?

So, I'm the person who asked about that Compaq Presario 2500 laptop. Well, guess what I found at another garage (well, it was smack dab in the middle of our local copy/paste American city) sale? ...
qwerty keyboard's user avatar
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1 answer
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What happens if during RAR compression the laptop runs out of battery?

I was compressing a large file using RAR, so it took quite a while. During the compression at some point I had to unplug the computer and let it continue with battery only. After a few hours when I ...
Torsten's user avatar
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Can I swap the power cables for the motherboard at the PSU socker?

The last time I built a PC was when the Pentium was the new hotness. However, I have decided to build my own instead of buying a new PC. I'm a bit confused with this modular power supply cable ...
Swisher Sweet's user avatar
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28 views

Display turning off causes power failure

I built a new pc and after adding the GPU, noticed that pc loses power shortly after display is turned off by power options due to inactivity. I used the same pc with the igpu only for a week where i ...
MertN's user avatar
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Memory erros on Asrock N100M

I'm planning to build a new homeserver for nextcloud, paperless and so on. Therefore i bought/used the following hardware: ASRock N100M mainboard G.Skill AEGIS 16gb PC4-25600 F4-3200C16S-16GIS ...
LoopingLouie's user avatar
2 votes
1 answer
200 views

Why are UPS battery backups all rated in VA instead of AH?

Looking at an online retailer, I see uninterruptible (battery backup) power supplies are marketed as: "1500VA" "600VA" "425VA" "425VA/260W" "1500VA/900W&...
natevw's user avatar
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0 answers
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Why is my CPU always at 150+ watts power usage

I just bought a new motherboard for my Alienware x17 r1 and everything seems to be working just fine but then for some reason I noticed that my CPU was being throttled. Reset the system and everything ...
Emmanuel Nkechukwu's user avatar
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1 answer
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Laptop is not charging when plugged and very laggy

I accidentally connected a Lenovo charger to my Dell laptop. After I realized this, I disconnected and connected to its Dell charger but now it doesn't charge. The laptop still works when plugged in ...
Asmat Ali's user avatar
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1 vote
1 answer
558 views

How to disable GPU or PCIe bus power?

I have PC with dedicated (power hungry) GPU. I don't need it's power for most time and need to save power (sometimes I use this PC on UPS and GPU takes about 35W at idle) so I must physically remove ...
samkia vtk's user avatar
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40 views

Server with Supermicro X9SCL-F motherboard not powering on?

I recently bought the following parts and assembled them together: Motherboard: Supermicro X9SCL-F RAM: 4x 4G DDR3 PC3-12800E 1600MHz ECC-Unbuffered UDIMM GOODRAM W-MEM1600E34GSM CPU: Intel Xeon E3-...
gapex 224's user avatar
0 votes
1 answer
66 views

Are these PSU plugs compatible with such a mainboard?

I am unsure on how all the plugs fit together. I already have this PSU: be quiet! Pure Power 11 400W https://www.bequiet.com/admin/[email protected]&.jpg There are two 4-...
thomas's user avatar
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GPU has two 8-pin PCIe sockets for power and my PSU has only one PCIe 6+2 connector. Is that one cable sufficient?

I'm building a PC and I've got an issue with the GPU (Sapphire Pulse 7800 XT 16gb graphics card) and the Deepcool DQ850-M-V3L 850 W modular power supply I'm using. The main problem is that the GPU has ...
The Alucard's user avatar
0 votes
0 answers
54 views

Power on after power failure iMac 2019 with Ubuntu

Hi i just installed ubuntu on an iMac 19.1 and discovered that after a power failure it does not come back as it did when it had macos. Looking around for solutions i saw several posts about using ...
Jaume Garcia Sanchez's user avatar
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0 answers
40 views

Is it safe to use a monitor power adapter with a higher amperage? [duplicate]

My MSI monitor power adapter gets hot when in use, and it's not even summer yet. I'm worried about this 20V 2.25A power adapter; it looks tiny and cheap. I really want to change it with a used one I ...
Super Super's user avatar
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0 answers
117 views

20V from Dell Precision 3581 USB C/Thunderbolt 4 Port with Power Delivery

USB-PD provides up to 100W of power through the USB-C Port, so I wanted to use 20V power from my Laptop to power my device. According to the data on the Dell homepage regarding the ports, they are ...
mab3602's user avatar
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0 answers
172 views

After unplugging my PC from the outlet, sometimes it won't boot for a long time

Before I go to sleep, I unplug my PC from the outlet, due to concerns about power spikes or something of the sort frying my computer. However, sometimes, when I wake up and plug it back into the ...
davi's user avatar
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0 answers
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Cable with multiple identical connectors in a PSU

Most PSUs I've seen have multiple copies of a connector on each branch (i.e, a Molex branch, a 4-pin PCIe branch, etc). I've taken to calling one of those cables a 'branch' or a 'strip'. Is there a ...
shea's user avatar
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0 votes
1 answer
236 views

Laptop power button not working but battery discharge pinhole button is starting the computer, what might be the issue here?

I have an Acer Aspire A515-51G, the issue is suddenly the power button has stopped working, the battery is charging, but the pinhole that they have given; pressing it, actually starts the computer; ...
Yanjan. Kaf.'s user avatar
0 votes
1 answer
69 views

Is 300w too low power for these specs?

Is 300w too low power for these specs? Specs: Nvidia GTX 750TI Thunderbolt OC (100W) Intel Core i5 2400 8GB RAM DDR3 bus 1333 SSD 120GB Xigmatek PSU 300W I think this PSU is too low power for this ...
PcUser1309's user avatar
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0 answers
57 views

Can I wire an 8pin double case fan into 2 x 4pin fan headers, or USB?

I have 2 x Delta 92x38mm EFB0912HHE Triple Blade High Speed Case Fan - Sleeved, which both have 4 wires which are spliced into an 8-pin connector, but only using 6 of the pins (2 are sharing 2 wires ...
dez93_2000's user avatar
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0 answers
33 views

Battery life of a MSI

I have an MSI Creator 15 A10UET-222NL that I have had for about 3 years. For some time now, I have been experiencing the problem that the battery life of my laptop is only about 1.5 hours without the ...
Masterrun80's user avatar
0 votes
1 answer
46 views

Dell "Power supply not recognised" GRUB solution not working

I have the same problem as this guy Workaround for Dell "Power supply not recognised" issue But the solution to add processor.ignore_ppc=1 did nothing. What steps would you suggest me to ...
Internet User's user avatar
0 votes
0 answers
201 views

Please someone help me with WHEA_UNCORRECTABLE_ERROR

Randomly, my PC initiated abrupt shutdowns exclusively during gaming sessions, accompanied by a bluescreen displaying the WHEA_UNCORRECTABLE_ERROR, followed by an automatic restart. Despite initially ...
Iason's user avatar
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0 votes
1 answer
181 views

Will this configuration supply the new gpu (Nvidia RTX 4000 ada) with too much power and damage it?

I just purchased an Nvidia RTX 4000 and it came with a 16(12+4) pin to 8 pin pcie adapter. Unfortunately it is only 4 inches long. The way my tower is configured it will not reach anything but the ...
M Stone's user avatar
0 votes
1 answer
168 views

Dropped HDD seems to be working fine with Windows, makes clicking noise when connected to Raspberry Pi 5

I dropped my External HDD (WD My Passport 5TB) while unplugging it from my Windows PCs USB port. Drop height was about 1m/3ft and it fell on the floor immediately after USB was disconnected. I'm ...
Domi's user avatar
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-2 votes
1 answer
165 views

Is there enough evidence that this USB-C power bank works with my laptop as per the specification and not harming my laptop? [closed]

I recently purchased a HP ProBook 440 14 inch G9 Notebook PC. According to the specifications, user manual, and user guide that came with the unit, as well as the USB-C power connector port symbol on ...
Faramarz's user avatar
2 votes
1 answer
404 views

Confused about connecting PSU to MoBo

I have a Corsair RM650 and an AsRock A520M-ITX/A, but I'm a little confused as to which connector goes where. I have recently been told that I need to connect both the AXT and the ATX12V connectors ...
physicsboy's user avatar
0 votes
1 answer
88 views

PC will not post after shut down/sleep. PC will post again if psu is switched off for a while [closed]

Specs: Operating System: Windows 10 Home 64-bit (10.0, Build 19045) (19041.vb_release.191206-1406) System Model: X570 AORUS ELITE BIOS: F37d (type: UEFI) Processor: AMD Ryzen 5 5600X 6-Core Processor ...
L.Laz's user avatar
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-2 votes
2 answers
373 views

UPS power(w) vs PSU power?

How much power(w) UPS must be for PSU( input 220V/10A)? If UPS rated power is smaller then PC drain power before power loss, will the UPS shut down or what will happen?
22flower's user avatar
2 votes
1 answer
549 views

USB is not showing in 'lsusb', and the USB keyboard is not working in GRUB; but the keyboard works in the BIOS

I have a Dell laptop (Vostro Notebook 5590) with Arch Linux installed on it. I didn't use it for around 20 days (I powered it on a few times just to update it via sudo pacman -Syu, but I never ...
Enlico's user avatar
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0 votes
0 answers
437 views

The driver \Driver\WUDFRd failed to load for the device ROOT\DISPLAY\0000

Getting Warning Event ID 219 as listed in the title. Following a similar question's advice, I set my Nvidia card (RTX 3090) to Performance mode in the Nvidia Control Panel. This is happening when ...
Icarus Zenero's user avatar
0 votes
1 answer
284 views

4G WiFi dongle only works with certain power sources

I have a USB 4G dongle that broadcasts a WiFi hotspot. When plugged into a laptop, or a wall socket USB charger, it works and broadcasts a network. When plugged into a car USB or cigarette lighter-USB ...
Chris Shaw's user avatar
0 votes
0 answers
39 views

PC doesnt do anything except spin fans on startup

I have this PC that I use as a server: Atermiter x99 chinese mobo Xeon e5 2667 v4 cpu 4x8gb ram (non ecc) Seasonic 430w psu Chinese nvme ssd, kingston ssd, 1tb hdd Hd 4670 gpu When I press the power ...
Daniel's user avatar
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9 votes
2 answers
3k views

Is it safe to replace a 11.25V laptop battery with 11.1V or 10.8V?

I need a replacement battery for an older laptop that originally came with an 11.25V Li-ion battery (presumably 3 cells at 3.75V each). The batteries I found online mostly have a nominal voltage of 11....
Dejan Govc's user avatar

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