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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34 views

Pc will not boot - power over HDMI?

So i encountered the strangest issue with my PC today. I was using it last night, i shut it down as normal, then this morning, nothing, checked power leads, tried to remove power hold in power for 30 ...
3
votes
0answers
26 views

Laptop adds harsh noise to sound playback while running on battery

I've looked at what others have said to those who asked with similar problems, and it seems to be a power supply issue. The louder the sound I'm trying to listen to is, or the higher the volume, the ...
3
votes
0answers
101 views

Laptop died after using a SATA/IDE USB hard drive converter

So I think I have done something very bad, I have a HP laptop and wanted to recover some data from some old SATA and IDE drives. I Bought this ...
2
votes
0answers
225 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. Fans spin up, a couple of seconds pass then it powers ...
2
votes
0answers
134 views

i7 4790K | Shutdown while running Prime95 and RealBench

The computer experiences a hard reset instantly with Prime95 "Small FFTs" torture test (also with the "Blend" test but after 30 minutes) and after 4-5 passess of RealBench benchmark without any kind ...
2
votes
0answers
156 views

Monitors keep blacking out with “hardware disconnected” sound

For a couple of years, I've had trouble with my homebuilt dual-monitor PC. It's set up to shut off the monitors when not used for several minutes. The problem is, when I wake it up, about 5% of the ...
2
votes
0answers
75 views

Desktop PC has stopped powering up

I've gone through the two existing questions I found that seemed to the closes to my situation, tried most of the proposed fixes, and I'm still not getting any results. Those questions where: ...
2
votes
0answers
66 views

Third-party AC adapter for Acer Veriton L460 desktop causes fans to continuously run at full speed, even when system is powered off

I'm not sure this is the the right place to be asking but it seemed like the best option. I acquired an Acer Veriton L460 (Ultra SFF Desktop) which requires an AC converter of 19V 17.1A so I ...
2
votes
0answers
115 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. ...
2
votes
0answers
46 views

Testing my PSU, and GPU

Bit of a complicated situation people.. But my main question is my PC seems to be running on my psu but it has a problem with my graphics card. It needs two six pins to run it.. The card runs on my ...
2
votes
0answers
186 views

What about placing a voltage regulator behind an UPS with modified sine output, to protect an active pfc psu?

I moved to an area/building where there are quite some problems with the wall-power supply. Primaraly I would like to protect my computers, secondary I would like have some affordable UPS for some of ...
2
votes
0answers
80 views

What controls the RAM voltage value?

Quite simply, is the RAM module responsible for generating its own operating voltage or does it just run at whatever voltage the motherboard is providing? I am imagining that it could either ...
2
votes
0answers
1k views

Force Windows 7 to think it is running on Adapter Power and not battery

Anyone know how to make a Windows 7 Laptop think it is running on AC Adapter power? This laptop (HP G62 series) has a usable battery which holds charge but it has a not-official power adapter which I ...
2
votes
0answers
195 views

HP ProCurve: Iterface X is Link Down (errno 365)

In my Home Environment im Using a Windows Server 2012 R2 datacenter (received from dreamspark) to manage my "home-domain". My server has 4 physical network connections, used like this: Nic 1 and Nic ...
2
votes
0answers
75 views

Computer won't power on

Was working fine for over a year, now won't boot. LEDs on the GFX card and one on the MOBO labeled PWR glow when plugged in, but nothing happens when I push power and shorting switch pins does nothing ...
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votes
0answers
2k views

Random BSOD crashes when all RAM slots are occupied

Although I'm a long term user of other StackExchange sites this is my first question on SuperUser, so please let me know if I've neglected any community customs I am experiencing regular BSOD crashes ...
2
votes
0answers
757 views

Random gray screen while playing game

I have a strange issue with my PC. When I play 3D games, sometime (not always) the screen just turn gray with vertical line while the computer seems to be still working. I though at first that the ...
2
votes
0answers
966 views

Computer randomly turning off after BIOS update?

I recently built a new PC, which has been running fine up until a BIOS update yesterday. I normally wouldn't update BIOS unless there were issues and in this particular case, the AMD FX-6100 CPU I'd ...
2
votes
0answers
735 views

HD5450 black screen after installing drivers

I just build a new HTPC-ish desktop computer and everything works fine until I install the ATI drivers for the videocard which is a Asus HD 5450 Silent 512MB DDR3 card. The main issue is that I get a ...
2
votes
0answers
2k views

Normal PSU voltages?

So i've been having some freezes here and there. After checking out my temps (normal), my memory (ran memtest x86 for 3 hours with no problems) and a cpu stress test (also, no problems), I decided to ...
1
vote
0answers
43 views

PC won't boot - Reasons unknown

So a few weeks back I bought a GTX 980 and in order to power it with longevity in mind, a Corsair AX860, an 860W Platinum PSU. It was working for two weeks and then I got "power surge warning/error" ...
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vote
0answers
19 views

Make laptop turn on automatically

I have a laptop of IBM X41. I want to use it in a project in making in which it will be used as kiosk. If power goes out and comes back I have to press the power button to turn the computer back on. ...
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0answers
32 views

FPS Skips due to Power Issues, is there anything I can do on my own to fix it?

My laptop skips frames. I tried to pin-point the issue and I finally have. My gaming laptop (Asus, 17.3", GTX 960m, 4gb, 12GB, i7-4k, SSD). It used to work at full-speed (All Max SC2 at ~100 fps), ...
1
vote
0answers
21 views

optical mouse only works near an electric field

two days ago,i faced a serious problem my optical mouse stop working suddenly. it just simulate a click and hold instead of single click and other strange things. i released that it works fine only if ...
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vote
0answers
20 views

Internal HDD stops working and the led indicator not flashing

I have 2 HDDs, one is old and one is new. Recently my PC has a problem. HDD stops working and I sure about it because the led indicator of front panel is not flashing. I removed the old HDD and it ...
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0answers
50 views

5v rails is getting 5.7v even with new PSU

I need help. I'm on my mobile typing this so i'll be word efficient. (English is not my native language and I only have a basic understanding of pc's) What's the problem? After the weekend I tried ...
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vote
0answers
73 views

I keep getting the usb inserted sound whenever I plug or unplug something to a power socket. Should I worry?

I own a Lenovo G510. I use a cooler base external mouse keyboard monitor 2:1 speakers Whenever I plug something to a wall socket that is near to the one that I use to power everything (when ...
1
vote
0answers
113 views

PC won't boot with more than one monitor plugged in, but once booted, works perfectly with multiple monitors

So my graphics card is an asus nvidia geforce gtx 750ti, and works perfectly with multiple screens. The problem is that the computer will not boot with more than one monitor plugged in, but after it ...
1
vote
0answers
28 views

PC Won't Sustain Power

I've been using this system almost every day for the past 7 months. It has worked completely fine with no indication of error at all, but now it will not power on. Whether I use the casr button, the ...
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vote
0answers
122 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
48 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 ...
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vote
0answers
31 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. ...
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vote
0answers
543 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 ...
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vote
0answers
57 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 ...
1
vote
0answers
87 views

PC shutting down every 30 minutes

I changed my graphics card and PSU today (went from 650Ti to GTX 770 and Thermaltake PurePower 430W to OCZ GameXStream 600W). I plugged these components in, at first I didn't fit the 20+4 pin ...
1
vote
0answers
184 views

Computer crashing when I play games

Specs: Intel Core i7-3930k Corsair H70 CPU Water Cooler 16Gb DDR3 G.Skill 4x4Gb 1600Mh 120Gb Intel 520 Series SSD 2Tb WD Caviar Green WD20EARX SATA 6Gb/s 64mb Cache SATA3 AMD Radeon R9 ...
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vote
0answers
231 views

Dell Vostro 3560: 3NB8W3 battery not recognized, problems with charging

I've been using standard battery for a while, but finally I bought extended battery (3NB8W3, 11.1v 8700mAh 97Wh). Sadly, my Vostro 3560 does not recognize battery properly. I always have "Plugged in ...
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vote
0answers
312 views

PCIe power from a Dell Optiplex 7020

We've just purchased a new Dell Optiplex 7020 to house a PCIe digitiser for use in scientific work. The PCIe card in question needs extra power in the from of a 6-pin 'PCIe' power cable. ...
1
vote
0answers
229 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 ...
1
vote
0answers
155 views

Waking from sleep causes instant shutoff

I am going to be very detailed as this seems extremely confusing to me ... I just completed upgrading a few components in one of my builds (list of components at end of thread). Everything works ...
1
vote
0answers
116 views

reliable/redundant PSU for SOHO server build

I am after reliable SOHO server build. I went with ECC RAM, quality NAS-grade harddrive and now I am looking at the PSU. I cannot seem to find any good redundant PSUs that would fit into the ATX ...
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vote
0answers
2k views

Power LED keeps Blinking - Asus p52f Laptop

I am facing an issue since a long time. I own Asus p52f series laptop, it's 3 yrs old right now. 2 months back I had to change the laptop battery, since I couldn't find the original Asus laptop ...
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vote
0answers
115 views

How to run an application in linux just before poweroff and after linux shutdowned itself

I have a embedded system that needs to be power off itself after shutdown. To power off, the Linux should send a command via an i2c to another device to power off the Linux board. So to shutdown and ...
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vote
0answers
342 views

HP laptop doesn't power up

I am kindly asking for your help. I have an HP DV7T-6C00 laptop which doesn't power up at all. I have read various forum threads and they did not solve my problem that's why I'm opening a new one. It ...
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vote
0answers
114 views

GPU drivers crashing VLC or games - CPU or PSU fault?

For a long time I've been experiencing the "Display driver nvlddmkm stopped responding and has successfully recovered." errors. I tried everything that is possible, to no avail. Today, I monitored ...
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vote
0answers
88 views

Faulty PSU - What needs to be replaced?

I was using my computer a couple of days ago, and out of nowhere, it instantly turned off. The computer was emitting a burning smell and would not power back on. After some researching I found that ...
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vote
0answers
130 views

Should you worry about high voltage and wattage on a non-overclocked computer?

I've been wondering if I should be worried at all about high wattage or voltage on a non-overclocked computer. I say non-overclocked because when I Google search this question or something similar it ...
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vote
0answers
20 views

Cursor hangs for a second when turning off sound system from the powerstrip

I have a curios hardware issue that I'm worried about. I have my desktop plugged into a regular power strip without surge protection or on/off switches. In one of its plugs there's another power strip ...
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vote
0answers
86 views

Usb ports connecting and disconnecting

I know this is not the place to ask about hardware problems and solutions, but I can't search on google anymore... I've been for over 24hours searching on google about my problem and trying to get a ...
1
vote
0answers
325 views

My computer restarts automatically when there is power outage and the monitor is turned on, using UPS power

I have a Zebronics Power UPS which backs up the system power at the time of power outage. I have no issues with that. But yesterday night I kept a movie to download and slept turning off just my ...