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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23 views

What could cause an abnormal voltage measure from the PSU besides a defective PSU?

For a while now I've been having random system freezes and reboots, especially when the GPU is under load. I looked in the bios and saw the 12v rail giving out 17v (!). Assuming this is a faulty PSU I ...
0
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3answers
222 views

My GPU stops suddenly and get black screen

I have a Nvidia GeForce GTX 660 graphics card and a dual monitor setup. Sometimes my screens go black and get a warning like: Nvidia Kernel stops responding. I tried a lot of things; ...
0
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2answers
46 views

Desktop not powering ON

I have a weird issue of our desktops supplied to customers. At customers site they are not turning on but when I bring it my office it is working fine. It tries to start at customer site, fan starts ...
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0answers
14 views

Laptop fan starts, stops, starts, stops and continues like this

I have a Dell Latitude E5430. With normal BIOS settings my fan was not working until the core got heated upto 60 C. I installed speedfan to control my fan. I have set the fan to a 100% all the time. ...
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0answers
11 views

Using Nzxt pp500w psu with new hardware - Safe?

I have Nzxt pp500w psu with Nzxt alpha Case. I'm planning an upgrade to the CPU and the motherboard to the following comination: Intel Core i5 4460 3.1Ghz (3.3Ghz Turbo) LGA1150 Arctic Cooling ...
13
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5answers
2k 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 ...
0
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1answer
51 views

I have some problems with my power supply. Or maybe my Graphics Card?

I have some problems with my PSU. Sometimes when I start on the computer I can hear weird motor-like sounds coming from the PSU but it is probably the fan hitting a component or something, but it is ...
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0answers
36 views

Dual PSU Advice

i have a fairly simple question, that will likely have a complicated answer. i have this pc | / Specs off the top of my head as the pc is dead atm: CPU: AMD Phenom x4 HDD: 750GB 7200rpm Sata 6 ...
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1answer
93 views

Dell AC adaptor flickering green light and won't charge laptop

I have a Dell Latitude E6400 and recently the charger blinks the green LED and wont charge the laptop. After a while however the laptop charges, and then this may occur again after a couple of hours, ...
0
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1answer
77 views

Only allow laptop to charge battery to 95%?

My laptop makes a very loud noise (coming from some CPU idles state / power saving mode). This is a well recognized problem, and people on the internet seem to have not found a solution yet. The ...
0
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0answers
117 views

cpu idle state - power plan windows - high pitched noise

I have a Dell XPS 15 9530. One famous problem is the "coil whine" or "high pitched noise" issue. The noise only occurs when (a) the cpu is in IDLE, (b) battery is fully charged. This suggests that ...
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2answers
73 views

What components in a computer have the potential to damage a GPU?

Something in my computer is damaging any graphics card that is put into the computer. I would like to know what components have the capability of damaging a graphics card, and how to determine which ...
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3answers
31 views

Real Machine randomly refuses to start

Folks I`m completely clueless. I have a machine with the configurations above. By some strange reason at random times it refuses to boot, fans will spin but seems no power enough is generated to get ...
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0answers
44 views

Satellite L745 Battery - Plugged In but not charging

When the adapter is plugged in to charge the battery, battery status show as Plugged in, not charging. When battery is plug to the laptop, can't turn on the laptop. I have to unplug the batter and ...
0
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1answer
40 views

Dual boot, two disks and poweroff unused disk?

I have set up my desktop from scratch as following: MSI B85M-P33 motherboard Crucial Sport 4GB installed RAM, will be expanded soon to at least 8GB Coolermaster N200 case Coolermaster G450M psu ...
1
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2answers
59 views

Loose power-cable connection

Low-tech but high-consequence. I have a laptop with the power-cable connection causing the power to be disconnected if it gets moved a bit. I've tried with other cables and get the same behavior, so ...
2
votes
4answers
384 views

Does charging a Li-ion battery smart phone through a computer's USB port put additional strain on the battery vs a wall charger?

I was curious about this. I read that you should generally avoid completely discharging and then full charging your Li-ion battery because this can strain the battery (though some suggested doing this ...
0
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0answers
40 views

Computer slow after plugged into wrong voltage

So I set up a desktop computer running ubuntu in a classroom that was running through an AVR at 220 volts. I got a report that it wasn't working, so I came to look at it, and sure enough, fans and ...
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3answers
50 views

Shortwiring a PSU WITHOUT Paper clip

So, in a haste to power up the PSU after the paper clip test, I cut all the wires from the 24 pin connector and tried to connect the green and the black wires directly. However, the fan on the PSU ...
1
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2answers
58 views

Ran power through a USB port- am I out of luck?

I'd like to preface this by saying I'm an idiot. Long story short, I stuck my Acer Aspire V's power cable into one of its USB ports and the computer unceremoniously died. Plugging it in shows no ...
0
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0answers
23 views

New motherboard just start in a special case but no display

Hi wanting to give a facelift to my current pc, I bought a mother board ( ASUS Z87 -c) and an i5 4670k cooled by Hyper 212 Evo, I build it and wants to test if everything works. For this I unplug the ...
1
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1answer
161 views

3-pin CPU cooler on socket 1150 has allways only constant fixed fan speed

I have following PC configuration MB ASUS Z97-P with Intel Core i5-4460 Cooler Master X Dream i117 As per here the cooler works well on 1150 socket. But ASUS Fan Xpert cannot adjust the cooler ...
1
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1answer
152 views

Power Supply Rating versus Graphics Card requirement

Windows 8.1 64 bit Lepa N500 Power supply GTX Geforce 650 ti boost My Lepa N500 Power supply is rated at 500 watts. I read some about PSU's and it says that the overall rating isn't really what ...
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votes
2answers
82 views

Gpu or psu is making a metallic whirring sound when I open up a game

When I open up a game my computer starts to make a weird sound even if I'm just on the title screen, I not sure if its the gpu or the psu. I suspect the psu does not put out enough power for my ...
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2answers
104 views

How to use wifi router as PoE?

Is it possible to use wifi router as PoE? This is a picture of my network connectivity. My PoE is not working properly. So I am thinking of connecting the Ethernet cable(which is the cable from ...
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1answer
50 views

ZOTAC GeForce GTX 780 crashes

Three to four days ago I bought a ZOTAC GeForce GTX 780 graphics card. I installed it and everything seemed to work properly. But now when I play games (AC:unity, Splinter Cell: Black list, COD: ...
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1answer
43 views

SSD and USB connections

Today I took apart my computer which housed two SSDs working as separate drives. Now I don't really need them in another computer and since they still have tons of life left, I want to use them as ...
0
votes
1answer
55 views

How do I find a compatible non-brand-name replacement adapter?

What techniques are useful for finding replacement electronic parts such as a laptop adapter. In my case, I am looking for an inexpensive compatible replacement adapter/cord for my Asus N550JV-CN191H ...
0
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1answer
81 views

How do I know if a graphics card is compatible with my computer

So I need to buy a new graphics card, how can I ensure that my new card is compatible with my computer? I am a total noob. I run ubuntu. My computer is a HP Pavilion HPE H8-1100z From what I have ...
0
votes
1answer
33 views

Will my laptop work in the U.S

I bought a PlayStation 3 from the us and when I moved it back to Egypt I had to use a stabilizer for it to work, do I have to do something similar for my laptop which I bought from Egypt (the normal ...
1
vote
1answer
72 views

HP 6910p battery charging very slowly

My laptop battery charge rate is very slow. It charges between 50% - 100% in almost 4, 5 hours. It's running normal on AC adapter without any problem but running very slow on battery mode. So can one ...
0
votes
1answer
126 views

connecting two 3.7v battery's to tablet, in parallel for extend the working capa

my tablet have 2500mah battery. it works for four hour. but I want to extend the source power. so I want to connect another same voltage battery to tablet. battery was 1500mah. can i make connection ...
2
votes
1answer
182 views

What can I do when my UPS overloads?

I've got a sweex 650VA and the following hardware: i7 3770k 32 GB Ram z77 Extreme 4 MSI nVidia GTX 980 2 HDD 5.25 3 SSD 1 DVD RW All supported by a 700 W power unit. When I use particularly ...
1
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2answers
43 views

How to Add Additional SATA Power Connectors?

I need to add additional SATA power connectors to a new machine. I am used to adapters using a Molex connector but the one I have on hand (Christmas eve) isn't familiar to me at all (please see ...
2
votes
1answer
2k views

Is it safe to use one 6 + 2 PCIe power cable to GPU

I will be installing a R9 290x that requires both a 6 pin PCIe power connector and a 6 + 2 PCIe power connector. Is it ok to use one PCIe 6 + 2 power cable from the PSU that splits into two 6 + 2 ...
0
votes
1answer
30 views

PSU connector correct size for this motherboard?

The ATX motherboard I am looking at requires a PSU connector of size: 24+8 The PSU has connectors as such: Main connector: 20+4 pin CPU 12V connector: 8pin I am assuming the 24 here equates to ...
0
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2answers
62 views

Laptop touchscreen hypersensitive to electromagnetic interference

I have a Dell XPS 15 laptop that's less than a year old and still under warranty. I've been in contact with Dell several times about this issue, but they don't have a clue. The problem is ...
2
votes
2answers
41 views

Immediate Restart After Power On - Before BIOS

When I originally built this PC, it had an issue with randomly restarting. I proceeded to try a bunch of things and ended up unplugging everything except the power switch and the cards I have in it. ...
79
votes
5answers
7k views

Why are my games slower on battery power, even with the power plan set to High Performance?

My laptop is capable of running most games on high settings at decent frame rates. However, if the power cable gets unplugged while I'm playing, the game immediately starts slowing down, even if I'm ...
1
vote
0answers
103 views

Graphics card fans very loud, no video/unable to boot

So let's back up a few months. I came back from work one day to find my computer on (I remote desktop to it occasionally) but my graphics card (Gigabyte GTX 770 OC-2GB version) fans running very ...
0
votes
1answer
39 views

Laptop Turning On and Off

Just for a heads up, I am not computer hardware savvy, but I do have a basic understanding of parts and what they do. I have not replaced any parts other than the hard drive but that was before the ...
0
votes
0answers
109 views

splitting 6 pin PCI-E cables

I am trying to add a second graphics card to a workstation. The machine already has a GTX970, and i have a spare GTX550Ti and GTX275 floating around. The 275 requires 2 PCI-E 6 pin connectors, the 550 ...
1
vote
1answer
48 views

Is it safe to use a higher supply voltage to a peripheral?

I have an ~10-year-old hub (Surecom EtherPerfect 505ST if anyone's interested) that says "DC 7.5V" below its power connector. Unfortunately, I can't find the adapter, but I do find one that fits but ...
3
votes
1answer
67 views

is it true that UPSs act as bottleneck for computers' PSU?

Once one told me that having a low-wattage UPS would make useless my PC's trillion-watts bad-ass PSU. Is this true? Is this true even for normal plugged usage?
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votes
1answer
63 views

What can go wrong when connecting a PSU? [closed]

It will be my first time connecting a PSU. Could someone provide me a good tutorial of how to connect a modular PSU? Also, what's the worse that can happen if I connect something wrong? Can my PSU get ...
17
votes
2answers
1k views

What kind of power port is this?

I'm planning on getting a new PSU and I was shopping online when I saw this thing. What kind of port is this? I've never seen it before, and I definitely can't find cables for this. For reference, ...
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votes
1answer
28 views

Using iPod as a Mobile Battery Charger [closed]

Is there anyway to make my (3rd gen i believe?) iPod touch output power? Preferably by a vanilla app, jailbreak, or another method that doesn't require tearing it apart. It current is sitting in my ...
0
votes
1answer
10 views

Strange behaviour on LCD monitor that doesn't turn on

This monitor will only turn on on 1 out of 8 or 10 attempts at pressing the "power" button, only after I had disconnected and reconnected it to the power line before each attempt, i.e.: Connect the ...
0
votes
1answer
113 views

A bit unsure how to hook my power supply up to my video card

I'm putting together a new machine for the first time in quite a while, and I've hit a snag. My new power supply is the EVGA SuperNOVA 1000W P2 80 PLUS PLATINUM. My new graphics card is the EVGA GTX ...
1
vote
1answer
147 views

Connecting an 8 pin connector to my 4 pin CPU?

I just bought a PSU which has a 4+4 pin for the CPU. I thought that my CPU has 4 pin connector but when i removed it i realised there were another 4 on the left covered by a small plastic piece. My ...