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 ...

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13 views

Pinout on an ATX 24 pin PSU Cable

I am relatively new to custom PCs, but I ordered a custom sleeved cable set from Cable Mod and The pin out is different than the cable that came with my PSU. My original cable is only missing pin 20 ...
0
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0answers
16 views

Screen pitch black after random shudown, Gpu's fans full speed.

This morning I went to power up my pc and BAM. My screen is pitch black. Noticed that Gpu's fans were at full speed. Switched to my moba gpu and well, it works fine. I cant understand if it's a GPU ...
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votes
0answers
36 views

PC won't work because of power supply

I had an old PC but it won't on because I think I switched between 220v and 110v while it was on. Can you tell me which part of PC is damaged or not? I don't need it anymore. I just want to sell parts ...
0
votes
1answer
3k views

CPU fan turns on for a second and stops, PC does not start at all

I have checked my PSU and it works fine. When I turn on the MOBO, the CPU fan, case fans and the psu fan itself turn on for half a second and then turn off. The PC remains off. The Bios light turns ...
40
votes
3answers
41k views

How do you check how much power a USB port can deliver?

Some laptops have a special USB port that can deliver more power than the other ones. However it is not always easy to identify which one is the good one, nor how much power it can deliver. So is ...
0
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0answers
21 views

computer lights up but then nothing

my computer was working fine today morning. then when i switchced it on in the evening nothing..the led near the lights up but thats its not beep sound or anything. even the fans on the PSU and ...
0
votes
1answer
24 views

What PSU sizes can I use with a 2U server chassis?

Note that this question is not a hardware recommendation. The actual PSU and server case quoted in this question are given merely as an illustration; the question itself, as it was explicitly ...
0
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0answers
14 views

PC wont boot when graphics card plugged in

I recently got new motherboard/cpu/ram, though the PC wont boot at all when the gfx card is plugged in. Gfx card is still old and quite outdated so I was thinking maybe it is imcompatible? PC ...
0
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0answers
32 views

How can a case fan with a 8pin connector plug into the 4pin fan header on the motherboard?

I recently bought a Delta 12cm case fan online and it has a 8pin connector (but only 7 wires) which I can't plug it into the motherboard. I put a typical 3pin fan connector beside it in the image, so ...
1
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0answers
27 views

2nd monitor won't turn on after computer power off

I've got two identical screens both connected via DisplayPort to a GTX 970. Then one day only one of my monitors turned on after I turned on the PC. My main monitor turns on just fine - every time. ...
1
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2answers
50 views

How many HDD's off 1 Molex? PICOPSU

First question here. I saw some posts about powering 2 HDD's from one molex, but I want to power 3-4 drives. I want to use a single molex and use splitters for the rest of the drives. Below is an ...
1
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0answers
23 views

Computer fully restarts with no POST under any significant load

Specs: i5 3570k GTX 670 Corsair HX750 PSU I built my desktop a few years back and it has worked like a charm up until the past week. Whenever I try to play any game, besides non-intensive stuff like ...
0
votes
3answers
702 views

My Toshiba Satellite c850 won't display screen

Before this happened, I had some occurrences where my laptop's screen turned off out of no reason. Everything was still on (the sound, tasks in thr computer, fan, etc. was working). I tried closing ...
0
votes
1answer
45 views

Computer shuts down randomly - suspected PSU or memory - which one is it?

I have replaced the motherboard and CPU after the old motherboard has died. Now PC is shutting down randomly (it doesn't depend on what sort of software I am running - could be working fine with Adobe ...
3
votes
4answers
10k views

How to calculate Power Supply Watts

I am trying to figure out how the Watts is calculated based on the Volts and Amps on power supply stickers. I am told that the 12V rail is the most important, but I don't know how they calculated ...
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votes
1answer
25 views

USB Device Over Current Status Detected

so i had a perfectly working PSU from my spare computer and wanted to use it on some other desktops that i got from a computer repair shop because they said they weren't working.I tried them and they ...
1
vote
1answer
412 views

Lenovo Ideapad z510 crashes when connected to AC power but works fine with the battery

I use a Lenovo Ideapad z510 running Windows 8 x64 and earlier today, during a snowstorm, power went out. Later, power came back and I got on my computer. As I was using it, I — idiotically — lightly ...
0
votes
2answers
6k views

Can a faulty battery cause my laptop to shutdown even on AC line? (battery installed AND plugged in together)

Until recently, I experience something rather annoying (and troublesome) with my laptop. It spontaneously shuts down itself without any warning, it restarts. No blue screen, no hanging program, just ...
0
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0answers
21 views

Replacement Power Supply Unit for FSP350-60EMDN [closed]

My computer of several years has unfortunately began to start randomly cutting power, leading me to suspect that the PSU is on its way out. I'm therefore looking to obtain a suitable replacement - the ...
0
votes
0answers
37 views

My computer automatically turns on from sleep when i hit a light switch of my room

I've had this problem for a year now, sometimes when i turn the lights on, my computer (running Windows 8.1) automatically turn on from sleep and I have to put it back to sleep again, but this almost ...
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votes
1answer
66 views

Is it a PSU or motherboard failure? Or something else?

My desktop computer suddenly stopped working today. When it happened, the fuse in the house was also knocked off. After switching it back on, I tried to turn the computer back on but nothing happened ...
1
vote
1answer
14 views

wireless router power adapter replacement 0.5a vs 0.6a

i have a wireless router with no power adapter, it needs a 9 volts 0.6 amperes adapter but i only have 9 volts 0.5 amperes power adapter. Will 9 volts 0.5 amperes power adapter damage my wireless ...
0
votes
1answer
197 views

Case/PSU grounding, static causing reboot

I built a machine for work recently that is displaying two distinct characteristics. One: Yesterday, I was able to shuffle feet on our carpet, touch the front of the case, arc static, and the machine ...
0
votes
0answers
12 views

Laptop transformer/AC adapter noisy ONLY when computer is working hard

So, I've seen the questions asking the generic "Why is my transformer making noise?", but my situation seems to be different. It's intermittent. It's not a hum, but a sort of crackly sound that only ...
0
votes
2answers
3k views

My Asus Laptop Power Supply is Broken — or is it?

System is an Asus N53S laptop. For several months I've been having the standard problem with a flaky DC plug that doesn't work unless it's positioned just so. Just to make life more fun, the battery ...
0
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1answer
62 views

Monitor, keyboard, mouse not receiving power, computer takes 4 attempts to power up

I have a computer with specs listed below. This morning I turned off the computer to install a pair of USB speakers (Logitech Z5). Afterwards, I turned on the computer, it would power up, but then ...
0
votes
1answer
3k views

EVGA Geforce GTX 760 ACX Installation issues

I recently purchased a new Geforce gtx 760 from EVGA with ACX cooling, and I'm quite confused with the power supply. The card came with 2 PCI connectors, however one was a 6-pin and the other was an ...
14
votes
6answers
3k 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 ...
2
votes
2answers
44 views

How does airflow work inside ATX PSUs with 12cm fans? [closed]

It sucks in air from inside the case but how does the heated air get out of the PSU? There's holes at the back but we all know that hot air doesn't travel sideways unless forced. Also in my case the ...
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votes
2answers
35 views

Higher Amperage and Higher Watt for Laptop Charger [duplicate]

My laptop's charger was not working anymore. So I bought a new one. However I couldn't find an exact matching charger, I bought a different one. My question is; Will there be any problems with new ...
2
votes
1answer
63 views

Computer crashing about 20sec into booting (even in BIOS). CPU or Motherboard?

EDIT: we seem to have narrowed the problem to CPU or Motherboard. Is there any way I can identify the cause between these 2 without a spare part to test? I was playing Minecraft for the first time on ...
0
votes
6answers
3k views

Preventing the power supply (PSU) from blowing the motherboard or vice versa

Problems with power supply and motherboard compatibility appear to be common. My power supply/motherboard nightmare Power Supply Too Big? Can a +5VSB supply rail value of 5.4V prevent a PC from ...
4
votes
3answers
642 views

Witcher 3 causes PC to restart randomly

(Not sure if I am asking at the right site, as it might be software/hardware related and not exactly gaming. I guess I'll post this question on Arqade too.) I have been having this problem since 2 ...
1
vote
0answers
22 views

How to troubleshoot occasional failure to boot?

This only happens 10-20% of the time, which makes it tough for me to analyze. Basically, when I try to wake the PC from sleep or try to boot shortly after turning it off completely, nothing happens. ...
0
votes
0answers
19 views

Higher voltage output from charger has affected my laptop and burned some components

My computer has been burned by high voltage output from my charger,but my challenge now is that I opened my laptop trying to find which component have been burned but I cannot see the actual ...
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votes
1answer
38 views

what means this? [closed]

what means evga psu GS and G ? http://www.amazon.com/EVGA-SuperNOVA-80PLUS-Certified-220-G2-0850-XR/dp/B00IKDETOC/ref=sr_1_2?ie=UTF8&qid=1434314521&sr=8-2&keywords=evga+psu
0
votes
1answer
41 views

My PC won't start up, what can I try?

My computer has been randomly restarting itself for the last couple of days. Sometimes it would stay on for hours before restarting, other times it wouldn't even get into Windows before restarting. ...
0
votes
0answers
21 views

Computer doesn't start when 12V CPU power plugged in

Configuration (troubleshooting): Board: Socket AM3+ Gigabyte GA-78LMT-S2PT CPU: AMD FX4300 PSU: 500W Peak Other components: GPU: ASUS Nvidia GTX960 Mem: 12GB (8+4) 1333 HDD: Seagate 1TB SATA ...
0
votes
0answers
18 views

How to properly calibrate new laptop battery which shows full capacity as ~20% of designed capacity?

I have a very unique problem as I can see. I have bought a new battery (not original brand) for my 3 years old Toshiba Satellite L750 (running Win 8.1 Pro) notebook. My old battery was about ...
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votes
3answers
3k views

Laptop battery software to disable charging AND battery usage

I'm going to buy a Microsoft Surface notebook that does not have the capability to easily remove the battery. I'm also going to be near a powerpoint for around 90% of my usage of this notebook. To ...
0
votes
1answer
20 views

Macintosh SE PSU Servicing?

First thing's first: I take full responsibility for any injury sustained while servicing a PSU. Any advice offered here is to be considered purely subjective. I own a Macintosh SE, which was ...
0
votes
1answer
24 views

Can i convert a ATX12V 4 pin into a 4 pin molex (IDE)?

I need to connect two 4-pin molex connectors to the backplane of my NAS (Silvstone DS380) but the PSU i use (Seasonic SS-250SU) did only come with one Molex connector. Since i don't want to put all ...
0
votes
0answers
31 views

What's the pinout for Fujitsu 16-pin PSUs? ( eg. model D12-250P1A )

The Fujitsu ESPRIMO P420 E85+ desktop PC ( and probably various other Fujitsu models ) uses an apparently proprietary PSU with a 16-pin Molex connector. The PSU is described in Fujitsu's sparse ...
0
votes
2answers
42 views

Power cord blew, computer is now sporadically slow

So I have a substantial gaming/ graphic arts computer running Windows 7 Ultimate. A few weeks ago I was playing a game when my power cord blew. The computer instantly shut off and there was a hole in ...
2
votes
2answers
3k views

Dell inspiron n5010 has failed to recognize AC adapter

Recently my dell inspiron n5010 has failed to recognize my 90W adapter (despite powering it just fine). Full error message: "The AC power adapter wattage and type cannot be determined. the ...
0
votes
1answer
39 views

What would happen, if my PSU suddenly couldn't provide enough power?

I've just recently bought a new GPU to replace my old one, and am awaiting its delivery. In the meantime, I've decided to have a look at my PSU, since my new GPU has a higher TDP than my old one. ...
2
votes
2answers
2k views

Computer turns off 20-30 seconds into the boot process

I have a Intel Core i7 system, ASRock MoBo, triple channel memory, EVGA graphics card. This is a ~2 year old build, that have been running perfectly until now. Whenever I turn it on, it turns off ...
6
votes
12answers
20k views

Using a 20V power block on a 19V notebook

Is that dangerous : for the computer (without the battery) for the cells If possible, explain why. Edit : Here are some more assumptions : Without the battery included, there is no risk of ...
0
votes
0answers
40 views

Computer Freezing/Crashing While Gaming, I've Checked Everything, CPU or Motherboard?

MSI P67A-GD65 (B3) Intel i7-2600k NVIDIA GTX 980 16GB DDR3 EVGA 750W PSU I've been having an issue when gaming. They're either crashes or hangs, whatever you want to call them. Both screens will ...
5
votes
2answers
159 views

Notebook's Battery is not calibrated. Operates at 0% for an hour

My problem is that even if the battery percentage is 0 the notebook can stay on around an hour. I have disabled "critical battery action" on my operating systems to use more time my notebook. The ...