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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1
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2answers
52 views

Can my PC handle a Nividia GTX 750 Ti? [on hold]

I am willing to update my graphics card to Nividia GTX 750 Ti but I am confused about the power supply and the motherboard if they can support it or not. Motherboard System Manufacture: Gigabyte ...
0
votes
0answers
24 views

PC doesn't boot most of the time

PC is now dismantled down to: motherboard (Asus Z97AR) CPU (Core i7) PSU (750W) Motherboard and CPU are new, PSU is old. If you continuously turn the power on, then of, then on again, ...
1
vote
0answers
23 views

Computer randomly loses signal to monitor

Around a month ago I build my first computer, and I've had no problems until now. For about a week my computer has lost signal to the monitor, is only able to be turned off from the PSU. (The fans ...
1
vote
0answers
34 views

Power supply needed? can I use the same size because old one is near end of life or do I need a larger one [on hold]

Symptoms, my computer when it gets going the power will just cut, the power indicator stays lit but everything else dies, all the fans, the screens go dead it does not respond on the network (ssh ...
0
votes
0answers
17 views

Missing pieces on UPS model Hantol HU1000 [on hold]

My UPS (for PC) is not working, so when I opened it I noticed several MOSFETs (I think) are missing (looks like its the part that converts DC to AC). Is there any schematic to replace them, because I ...
0
votes
1answer
19 views

System keeps changing power mode while gaming

Recently my laptop keeps changing power mode while gaming, like if i disconnected the charger physically. I don't have another charger to test, this is the stock one which has been running fine for 3 ...
0
votes
0answers
21 views

PSU fan (power supply fan) not spinning. But computer works

The PSU fan on my computer is not spinning at all. I've now run a high def video for 20 mins and it's still not spinning at all. I read there's power saving features that will power down the fan, but ...
-1
votes
0answers
16 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
votes
1answer
21 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 ...
-1
votes
0answers
37 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
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
votes
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
votes
0answers
33 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
vote
0answers
31 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
vote
0answers
25 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
1answer
50 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 ...
1
vote
2answers
55 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 ...
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votes
1answer
32 views

USB Device Over Current Status Detected [closed]

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 ...
0
votes
0answers
38 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 ...
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
0answers
13 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
77 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 ...
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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
2answers
47 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 ...
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
20 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
42 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
24 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
21 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 ...
0
votes
1answer
25 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 ...
4
votes
3answers
734 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 ...
0
votes
0answers
38 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
44 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 ...
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
40 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. ...
0
votes
0answers
44 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 ...
-1
votes
0answers
29 views

Laptop won't turn on

I have a HP probook 650 G1 which I bought last Monday and now it won't turn. It turned off suddenly while I am working on (no sound no, no smells) and now it won't turn on when I push the power. The ...
2
votes
1answer
71 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 ...
1
vote
1answer
28 views

Computer crashing at random

I've been having a "small-ish" issue where my computer randomly shuts down. Be it in the middle of a game or work etc, even on idle, it just crashes and reboots. no BSOD or anything. One minute it's ...
1
vote
1answer
28 views

Desktop doesn't boot [closed]

So I think I stuck a chunk of incompatible RAM on my mobo, smelled a burning smell and after switching out the RAM my machine wouldn't boot. Assumed mobo was fried and got a new one. I also recently ...
0
votes
4answers
323 views

PSU for GTX 970 + i7 4790 [closed]

For my new PC I'm currently looking at getting an Intel i7 4790 (non "k" version) and a GTX 970 as the main components for the system. It will also be running an SSD, HDD, Network card, and 32GB of ...
0
votes
0answers
29 views

ASUS Z87-PRO cannot power-on via USB from S5

I have the ASUS Z87-PRO connected to a Seasonic S12 II Bronze power supply. All USB ports are powered while the device is powered-off - S5 (by having the "ErP ready" option in BIOS disabled). I ...
1
vote
0answers
50 views

Can a PCI-E 6 pin cable be used in-place of an 8 pin cable?

I yesterday returned my GTX 960 as it was faulty, and have bought an R9 290, which requires two 8 pin PCI-E cables. I have two 6 pin PCI-E cables, which supplied power the 960. The only difference ...
1
vote
1answer
47 views

Lock computer vs. Switch user

I am the only user on my PC, what is the techinical differnce between locking it and switching user? Does one of the options do a better job of preventing internet connection disruptions (p2p)?
0
votes
1answer
51 views

Laptop battery - 100% available plugged in charging

I have a Dell Inspiron 5521 running Windows 8.1.Recently, I had replaced my battery.But my battery indicator shows 100% available ( plugged in,charging) status. I calibrated the battery but no ...
1
vote
0answers
27 views

What could cause a GPU upgrade to result in a 50% performance loss?

Background (The Why?) I'm using AMD Graphics Cards for distributed GPU computing. BOINC, Folding-at-Home, and similar. The Problem I've replaced my old card, an R7 260x, with a much more powerful ...
0
votes
1answer
37 views

Airflow PC, decision where to put holes [closed]

I have a PC configuration as follows (regarding hardware with fan): 1 x power supply 1 x CPU 1 x graphic card So my pc case is pretty tight (only way for air to come in would be via PSU or graphic ...
-2
votes
1answer
48 views

Powering 2.5" HDD via SATA but transfer data using USB?

My Mini ITX Motherboard only has 4 SATA ports, so I have ordered some USB header to USB female converters. When they arrive I will have 4 USB 2.0' s inside my case. I know that USB 2.0 will not be ...