All Questions
Tagged with power-supply power
468
questions
33
votes
6
answers
11k
views
Do DC adapters consume energy when no device is drawing DC current?
Do DC adapters consume energy when no device is drawing DC current?
Or… Can I leave my mobile (5-20 W) or laptop (40-60 W) chargers plugged in and switched on and hope they won’t draw current if my ...
- 12.2k
0
votes
2
answers
200
views
Battery charging on and off, should I replace battery or AC adapter power supply?
Situation:
I have a Lenovo G40-70. Windows 10 Home. I bought it as new in 2017; I keep it running 24-7. The problems started with the battery not charging. I disconnected it for the night, leaving the ...
- 56.1k
0
votes
2
answers
6k
views
Computer won't start when plugging in sata power cable to power supply
I just bought a hard drive for my PC and connected it to the motherboard and psu. Once I started the computer it refuses to start, I removed the sata power cable and the sata cable, and the pc started ...
- 310
3
votes
3
answers
7k
views
NVRM: Xid: 79, GPU has fallen off the bus
I am trying to do some deep-learning on my GeForce GTX 980 Ti GPU. I have a 658W power supply, but when I start running TensorFlow, I get the following error in dmesg:
[ 158.598263] ata2: exception ...
0
votes
1
answer
71k
views
PC doesn't start. Power lights blink once
When I press the power button of my PC, it sometimes powers on.
Most of the time, it gives a short flash and nothing else.
Then I have to either press and hold the power button for about 20 ...
- 1
1
vote
0
answers
40
views
A very seldom black thick lines flashing on monitor. Its a new pc. I also hear statics on my headphones when it happens
So I have a new pc. And i have it for almost 1 month. And im just concerned about the black thin lines/thick lines flashes.
It only happens for like 2-3seconds, I also hear statics on my headphone ...
- 9,103
1
vote
1
answer
8k
views
Why don't the cables from the power supply (CPU1-P4 and CPU2-P8) to the motherboard (ATX_12v_2x2 and ATX_12v_2x4) fit?
Putting together the first PC. I can't figure out how to connect the processor (intel Core i7 10700) from the power supply (be quiet! Pure Power 11 700W) on the Gigabyte Z490 AORUS ELITE AC ...
- 781
2
votes
0
answers
99
views
When I turn on my PC,why it spins for a second then restart automatically? (when I unplug and plug in back the power cable)
I have recently built a custom PC, it works (I think) very well other than the issue below. Since I just built it, I was still playing around with that (changing fan positions, adding new fans, etc.. )...
0
votes
1
answer
106
views
Can a usb c hub going into usb c port power 3 external monitors each consuming 7.5 watts by itself without dc/ac input?
I'm trying to set up a notebook with 3 external monitors attached, trying to do it as clean as possible without wires sticking out everywhere so I want to velcro a hub on the back, etc.
The external ...
- 106k
0
votes
0
answers
82
views
Is it Windows or the battery?
my laptop has an 8 year old battery. my battery didn't charge and i froze it after freezing it, my battery charged again and lasted for 3 hour of normal use and like 2.5 hour of video and sound use. ...
CommunityBot
- 1
39
votes
6
answers
17k
views
I plugged in a molex cable the wrong way and the power supply exploded. Did it kill my hard drive?
I bought a cheap kit allowing me to use a 3.5 SATA hard drive with a laptop, by plugging it in with USB. It still requires external power supply so I used an adapter that came with this kit but I ...
0
votes
1
answer
1k
views
Can too high of a wattage on a (cheap) power supply cause a GPU to burn?
My friend had a very small, ignited fire near where their PSU meets their graphics card last night. He thought it was from cooking bacon, until nothing could turn the fire alarms off. In the server ...
- 101
0
votes
0
answers
512
views
Can I use a charger with different current than the original? [duplicate]
I have no idea about electricity so I don't know what any of this means. On the plug of my original charger, the numbers are 5A/250~ and on the cable that connects to the power supply 'brick', it says ...
- 93.8k
0
votes
1
answer
1k
views
Can laptop battery get damaged if charged from non grounded outlet?
Recently I noticed my laptop battery swelled large amounts a lot on both top and bottom. It is an internal battery and 2+ years old. I have suspicion that using a power outlet without earthing/...
CommunityBot
- 1
1
vote
4
answers
8k
views
Computer shuts down randomly, not overheating, kernel-power 41 error
I know there are a lot of threads about this across the internet but none of them really point to a particular cause or a fix.
Over the last few weeks, with increasing frequency, my computer has been ...
- 31
-4
votes
1
answer
62
views
electrobot amd ryzen 5 3600 nvidia geforce rtx 2060 super 8gb gaming tower pc with a 550 watt power supply + 24" lg ultragear 1ms 144hz [closed]
i have
a electrobot amd ryzen 5 3600 nvidia geforce rtx 2060 super 8gb gaming tower pc with a 550 watt power supply + 24" lg ultragear 1ms 144hz gaming monitor + zebronics transformer m gaming ...
- 50k
0
votes
0
answers
830
views
Laptop's battery LED keeps blinking and doesn't charge
1. Acer aspire e15-551g:
2. Battery Health: 71.5% ( from battery report )
Problems:
a) When plugged with adapter, the following happens in the order:
Battery is charging (in this state for 2-3 ...
- 303
1
vote
1
answer
293
views
Self-build pc won't get power
I'm trying to build a pc with only brand new bought components. After following everything by the guide of the motherboard, the pc won't turn on (pushing the button does nothing, not even a fan is ...
- 43.1k
0
votes
1
answer
1k
views
I conncted my laptop to a power supply through an usb port. The power supply is 5v as the usb port.Did i damage it?
I have a cooling pad that draws power from the computer through an usb cable to work. To avoid discharging my computer, i used as a power supply my smartphone charger (removed the phone cable and ...
- 20.2k
4
votes
2
answers
3k
views
Do I need a power strip with power-surge protection for a laptop?
There are simple power strips and power strips with surge protection (and also with short circuit protection). Is there difference in that matter for PCs and laptops? If I use laptop I have a battery (...
- 2,297
0
votes
1
answer
123
views
Can a power supply incorrectly shutdown cause my graphics card to blow?
After someone unplugged my pc and rearranged the cords, I cannot get it to work on any monitor. I got a No Signal error so I had someone replace the graphics card which was blown. After this fix, he ...
- 57.5k
0
votes
0
answers
54
views
Two power supplies meter the same, computer turns on with one but not the other
I'm trying to diagnose an apparently random sudden power-off problem on a desktop, so I swapped out components until the power supply and mother board were the remaining suspects.
I removed power ...
- 113
0
votes
1
answer
478
views
Parallel battery charging UPS
Just bought new ips for 25 dollars and have bought 3 batteries 12v 9ah each.
What i did is the following
Opened the UPS and connected positive end of the battry to a wire that is connected to a ...
- 4,517
0
votes
0
answers
46
views
How to use all the 45 Watt out of the Xiaomi Mi Power Bank Pro 3
I have been working on this project that consists on making a somewhat portable computer... I intend on using a Raspberry Pi and an old laptop monitor to get the job done. The thing is that I bought a ...
0
votes
1
answer
331
views
Why would an IBM netvista suddenly fail to turn on?
I have an old Pentium IBM Netvista desktop PC with I believe an ATX power supply. For reference, the cable going into the motherboard from the power is 10 pins long by 2 wide and the info on the power ...
- 1
0
votes
1
answer
2k
views
Tingling/shock when holding USB plug of externally-powered device (speakers, etc) and touching HDMI/DP plug
PC:
GPU: Gigabyte RTX 2070 Windforce
CPU: i7 7700
RAM: Kingston HyperX Fury 16GB DDR4
Mobo: GIGABYTE GA-B250-FINTECH
PSU: EVGA 750 G2
Case: Coolermaster HAF 912 Combat
I'm troubleshooting an ...
CommunityBot
- 1
1
vote
1
answer
3k
views
Computer won't shut down properly with USB device plugged in
I'm running Windows 10 and recently bought an Audioquest DragonFly Red USB DAC - ever since, the device is of course plugged in constantly so that I don't need to reconnect it each time I start the ...
- 5,972
0
votes
1
answer
271
views
How to repair hardware having dificulties to turn ON PC
I have a very strange problem that gives me troubles almost every time I try to turn on mi PC. Yes, almost, not always.
When I push the power button, my computer acts like nothing happened. Sometimes ...
- 121
0
votes
1
answer
2k
views
What kind of a power supply is this and how can a standard ATX PSU be hacked to replace it?
I need to replace the power supply of a newer HP Pavilion system for an emergency situation. The power supply has been damaged, but unfortunately it seems that all replacement delivery estimates are ...
1
vote
1
answer
3k
views
Radeon HD 5670 power requirements
I'm looking at a HP PC HPE-510t, this HP PC only got a 300W power supply, how can it run HD 5670 video card, which requires minimum 400W power supply?
The reason why I ask is because currently I have ...
CommunityBot
- 1
1
vote
2
answers
9k
views
-48VDC power required: How to make it work with 110VAC input
I recently bought a used NetOptics TP-GCU-48V network tap on eBay for use on my home net. This is one of their earlier models and has been discontinued for a number of years. They have two versions (...
- 1
1
vote
0
answers
127
views
Windows 8 - Missing 'Balanced' Power Plan
I've seen a similar (although not the same) question here Default Power Plan options apart from Balanced have disappeared, how to restore them? but I did not understand what to do. Basically, when I ...
- 11
1
vote
1
answer
57
views
Can I power my 3,5 HDD Enclosure with laptop power supply? [closed]
As stated in the title, I've got myself a nice little 3,5" HDD enclosure like this, but as of late I've lost power supply that was shipped along with it.
Can I use my 16V 3,5A laptop power supply (...
- 9,703
1
vote
1
answer
197
views
Is it a dead motherboard, or not enough power? (2008 Intel Skulltrail D5400XS)
I'm hoping that someone has real-world experience starting up an Intel Skulltrail D5400XS system, with less than the Intel-recommended 1,000 watt power supply. And/or, real-world experience with ...
CommunityBot
- 1
1
vote
1
answer
1k
views
My PSU for my PC buzzed when plugged in, caused a power short, now won't turn on
My PC was working fine yesterday.
I installed a fan controller today. After installation, I went to plug the computer in and when I did the PSU made a buzz, then the power in the room went off and I ...
- 21
0
votes
1
answer
157
views
How to replace my power supply safely?
If something is powered from a 9 V and 1 A supply, you can replace it with a 9 V and 1 or more amp supply. How would one calculate if it is safe to replace it with a less voltage and less amperage ...
- 21.6k
0
votes
1
answer
256
views
Monitor power brick [duplicate]
I was just given a 27" monitor that needs a 19v 3.34A power brick. However, the brick is missing. I have a 20v 7a brick from an old laptop. Can I use that, or does the power need to be exact?
In ...
- 2,814
2
votes
0
answers
738
views
Won't boot after inserting new RAM sticks
I bought a new pair of 4GB RAM sticks today.
Thinking it'd be easy to install, I powered down, slapped them in and powered on. It wouldn't boot. The fans spin up, a couple of seconds pass then it ...
- 13.5k
0
votes
1
answer
2k
views
Is it safe to leave a disconnected laptop charger plugged in to its power socket?
When I'm at my desk, my laptop is always plugged in. Sometimes I take it into other rooms of the house. When I disconnect the charger from my laptop, I make sure the charger is unplugged from the ...
CommunityBot
- 1
1
vote
2
answers
12k
views
How turn on the HP power supply
I had a problem on my HP computer. My computer died and I believe that the problem is its power supply. The power supply is a PS-4241-9HA
My questions:
How to test or turn on the power supply when ...
- 1
0
votes
2
answers
3k
views
unexpected shutdowns under GPU load, but GPU doesn't *appear* to be overheating
Hi there! I really hope someone can help trouble shoot this!
I'm getting unexpected shutdowns when GPu is under load. It has happened before (just last month), and it seemed to be fixed previously by ...
CommunityBot
- 1
8
votes
3
answers
26k
views
auto power on after power loss on laptop
I know for a computer I can change the BIOS settings to have it 'auto on'. This way the computer turns on by itself after power is restored ( instead of manually having to start the computer after ...
- 12.3k
26
votes
6
answers
53k
views
Does a power supply draw only as much power as it needs?
I recently built a small mini-itx Intel ATOM-based Ubuntu home server. The case I choose is a small case but only a full size ATX power supply would fit it. I choose a mid-grade OCZ 500 watt modular ...
- 1,288
0
votes
2
answers
684
views
HP EliteDesk 600 turns of after releasing power on button
I have an EliteDesk 600.
The power switch on the front refuses to stay connected. Depress it and the computer starts; release it and it switches off.
I have replaced the switch and this makes no ...
1
vote
1
answer
1k
views
G751JY AC charger disconnects while gaming.
So a few months ago my battery died, which in turn made my computer turn off while gaming. It seemed that the computer (GPU?) needed more power than the AC could give causing it to shut down.
So I ...
0
votes
1
answer
1k
views
My motherboard has a 4 pin connector, but my motherboard has a 24-pin power connector. Is there anyway I can connect it to the motherboard?
So I have a pre-built HP Prodesk pc, and I wanted to upgrade it, but it required me to get a bigger wattage PSU, so I went for this - https://www.ebuyer.com/856008-thermaltake-litepower-450w-psu-ps-...
- 58.4k
20
votes
9
answers
140k
views
What is the 6-pin power connector on an HP ProDesk?
I have an HP ProDesk 600 G1 desktop PC, and I'm upgrading it with a new graphics card and a new power supply.
Now, the problem I'm having is that the motherboard in the PC doesn't have a standard 24-...
- 1
0
votes
2
answers
5k
views
can i power a device with more output amperage than the device needs? [closed]
I just brought a speaker that runs on 12v power supply. So i want use it on my car.
Can i power a speaker with a car battery 12v directly?
Speaker input: 12V, 1.25A
Car battery output: 12V
- 4,361
2
votes
1
answer
3k
views
can i charge UPS's external batteries using external charger ? while UPS is ON 24x7?
What are the cons of using an external battery charger for charging my UPS's external batteries while the UPS is on?
I have an inverter/UPS with external battery. I am tired of constant PC reboots ...
CommunityBot
- 1
1
vote
1
answer
1k
views
Reduce power usage while computer is "off" [closed]
Recently I bought a device to measure the wattage from devices. To test the apparatus I measured 6 watts from an IKEA LED light bulb which was supposed to produce 6 watt usage and a few laptop ...
- 4,257