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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42 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
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47 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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735 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 ...
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186 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
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420 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 ...
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499 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
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870 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 ...
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20 views

Two PC's, shared power grid, can this be reasonably done?

I've got quite a data headache. Motherboard A has partially failed. I replaced it with board B. Oops, board B won't play nice with the RAID card. Oops again, part of the backup of that RAID array ...
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19 views

PSU making noises coinciding with bad gpu?

I recently experienced some strange behavior from my system and I wanted to get your opinions on what it could be. First off, dem specs: ASUS P5Q Pro Mobo PC Power and Cooling S75QB 750W Intel Core ...
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31 views

Acer Monitor - No Response to Power Supply?

Model No is S231HL, for reference. As I was packing to leave my dorm, I unplugged it for the first time in a long time. It was working just a few minutes before this. I then realized I wasn't sure ...
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51 views

Keep getting electrified by computer power plug

I recently built a desktop computer, however whenever I move it to a different room for instance, and I accidentally touch the plug pins (UK), I get a quite significant electric shock. Is this a fault ...
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24 views

Gtx 780 upgrade seasonic g series 450rm

as of right now I have a seasonic 450rm power supply with 37 amps on the 12v rail. Its powering a mini itx motherboard with an i7 4770k on it and 16gb of 1.5v memory. The i7 is over clocked to 4.3ghz. ...
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13 views

HP J8156A Vernier network adapter

I've got a network card, that may or may not be working that I am trying to use in my home server. Got it from ebay as "used".The card does not let the computer boot, the computer turns on, but ...
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137 views

Can I Power the front-panel USB 2.0 ports with the power supply's 5V rail?

I have a high power (700ma+) USB device I wish to use on a single front-panel USB port. The USB specification in Wikipedia states: The USB 1.x and 2.0 specifications provide a 5 V supply on a single ...
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28 views

PSU replacement made the whole PC fail

What happened is a long story, but I'll try to be as short as possible. My PC failed without warning yesterday, I suspected my PSU (an Antec HCG 520w), so I bought a new one (Corsair RM 650w) and I ...
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231 views

Dell Inspiron laptop not starting

I have a Dell Inspiron N5010 dual booting Windows 7 and Ubuntu. It was running fine earlier, but suddenly it started mistyping letters with multiple letters and special characters for one second and ...
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77 views

Sudden and spontaneous shutdown when using ACPI

On a Dell Optiplex 755, when I bring the system out from ACPI S3 (suspend) to S0 (normal running mode), the system stays on for perhaps 10 seconds, maybe more. Then it very suddenly shuts the power ...
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69 views

Trying to run computer off DC but monitor is always blank

I am trying to get a computer to run off a DC battery. The computer seems to start fine (the CPU fan spins and the hard drive whirs), but nothing displays on the monitor. It just stays blank, as if ...
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116 views

Intermittent hard freeze/crashes, generally while idle. No event viewer details

Subject says most of it. My HTPC will occasionally be found in this hard-locked/crashed state when nothing of note was being done. The past couple times, it has been while the screensaver was running ...
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200 views

USB ports causing Wireless and Mobile Phone tethering drop out

I have a problem with my USB ports and I can't seem to pinpoint the problem. I'm hoping that I can get some idea as to how to troubleshoot my problem. Problem description: I recently bought a USB ...
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0answers
390 views

Monitor in power saving mode while CPU is still running

I am have a problem with my LCD going into power saving mode. It all started about three days back by randomly going into power saving mode while PC is smoothly running. Then the frequency of going ...
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72 views

Should The Plug of UPS Always Plugged?

Which is better for lifespan: Switch off the UPS and plug off or Switch off the UPS and leave it plugged in. Consider this two statements and give seperate replies: Which is better for >1 Month ...
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321 views

Why does my computer shut down suddenly without any warning?

My computer is: Motherboard: MSI 970a-g45 CPU: AMD FX-8350 eight core processor 4.0 GHz Power Supply: TSCO 650 Watts I bought my CPU 2 days ago. My last CPU was an AMD Athlon 460 x3 3.4 GHz. After ...
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335 views

Upgrading Graphics Card on ASUS CM6870-US015S

I want to upgrade my Graphics card(NVIDIA GT 620) on my computer(ASUS CM6870-US015S) and I have a couple of questions. I noticed that the PSU on my Graphics card is only 350W so I'm assuming that I ...
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655 views

CPU fan runs only after removing “12 V power supply connection from motherboard” or HDD power supply"

My PC config (4 years old): Motherboard: ASUS M2N 68 - AM Plus CPU: AMD PHENOM X2 545. HDD: WD 320 GB RAM: 2 GB DDR2 800Hz Power supply: Intext 450W switching PSU About a month ago my PSU was gone ...
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327 views

My desktop won't boot or turn off, and there's no output - is it an issue with the motherboard or the PSU?

I have a desktop that won't boot, and the monitor doesn't turn on. The weird thing is as soon as you plug the computer, it turns on and then you can't turn it off. There's no light on the board to ...
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63 views

Monitor won't turn on

I have an Acer flatscreen that works properly (I've tested it), connected to a graphics card that also works properly (also has been tested), and still it does not respond when I turn the computer on ...
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94 views

Can't get the new computer past POST, continually rebooting

I’ve have been having power problems with a new computer that I recently put together. The system included: Thermaltake Level 10 GTS case Asus Sabertooth Z77 motherboard Asus Geforce GTX 660ti video ...
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177 views

CPU fan failing to start on boot sometimes

I have a fairly old desktop, which I like to use a fair bit over my newer PC's however sometimes on boot, the CPU fan fails to start. I had this problem previously, and I simply bought a new fan. I ...
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134 views

Need to use both button and paperclip on ATX connector to power the pc

I have some issue on a computer, and after several tests I found out that the only way to safely turn on the computer (otherwise it is dead) is to keep the paperclip on the atx connector and push the ...
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254 views

Computer only boots after connecting PSU PSON connection to motherboard PWRSW + ground

My server ( ASUS M3N78-EMH HDMI ) would not come back up after I put swapped some RAM. I got it back to work eventually but there is something strange: after a complete power off (pulling the ...
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101 views

Benchmark tool that brings GPU to maximum in order to diagnose defective PSU

I am currently trying to diagnose the following problem with my computer: Without warning or pattern the computer shuts down automatically, then restarts automatically and BIOS displays the following ...
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187 views

What can cause “Reboot and select proper boot device” other than hard drive issues?

I'm having some weird issues with my computer that I'd be hugely appreciative if someone can help me troubleshoot. Recently, my HTPC will start fine, then after 20-30 minutes it will freeze up and ...
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130 views

New power supply won't start

I replaced my power supply with a new one. I connected all cable to the motherboard 24-pin and Molex, HDD and DVD power cable, then I started my PC and I used it for about one hour. After I shut ...
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169 views

Protecting Against Inrush Current

In my apartment, the main circuit breaker has a very low amperage limit of 5A (220V), with a maximum power limit of 1300W. Therefore, about 75% of the time I plug in my PC power plug, the inrush ...
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83 views

Check my PSU math

I have been working on setting up a new Solaris 11 server for home lab use. I plan learning a bit about ZFS and expanding my sysadmin knowledge a bit. (heavy networking background!) Anyways I got the ...
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214 views

Computer Won't Boot After New Power Supply

I recently bought a Rosewill 750-M PSU to replace an Antec Earthwatts 500. My computer worked fine before making the switch. After installing the Rosewill PSU, I attempted to boot. Fans spun up for a ...
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196 views

Keyboard light on after computer shutting self down

I've been having problems getting my desktop to boot as of late. There are a few possibilities as to why this is, but it turned on yesterday while I was in class and I decided to leave it on. Today ...
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852 views

Blinking motherboard power LED

I was just rebuilding an old desktop PC to be used as a HTPC and the LED on the motherboard that indicates when there is power is blinking fairly rapidly. The only way I can get the machine to boot is ...
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17 views

ASUS X501a does not start up(fan spins, HDD does not spin, black screen)

Repairing my friend's ASUS X501a laptop. After power up, it goes into a black screen. The fan spins a few seconds after powering up , but HDD refuses to spin. I have tried the following: Plugged a ...
0
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0answers
22 views

Getting constant APPCRASH on Kernelbase.dll

Specs: GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard AMD FX-6350 Vishera 6-Core 3.9GHz Socket AM3+ 125W Desktop Processor FD6350FRHKBOX G.SKILL Sniper Series ...
0
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0answers
86 views

CPU, GPU fans spinning at full speed after shutdown

My computer has been running fine for 4 years, but yesterday it starts to exhibit odd behavior: After I shut down the computer, the CPU and GPU fans start spinning at full speed (everything else ...
0
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0answers
50 views

How to optimize battery lifespan of Lenovo Z510?

I just bought a Lenovo IdeaPad Z510 laptop, and before I boot it for the first time, I want to make sure to know the exact proper care to ensure the best optimization of the battery's (4 cell 48 ...
0
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0answers
23 views

Attaching SCSI drive through USB

I have a number of wide, 68-pin SCSI drives for which I need to copy the data off. I have tried to use a wide-to-narrow SCSI adapter (68-pin to 50-pin) coupled with an Adaptec SCSI-to-USB adapter ...
0
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0answers
21 views

I've upgraded gpu and sound card and added SSD…is the antec vp650p v2 psu still ok?

I've recently upgraded my p8z77v-lx based intel 3.2k system with a new gtx770, soundblaster zxr and added a SSD. The system also has 2 SATA drives, 2x8gig RAM 1600 a PCI intel Ethernet card. Is the ...
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0answers
27 views

Is power outage dangerous in BIOS?

I recently had problems with my adapter for my laptop, and I think there is a problem with the connector. But to know that, I have no other solution but to test if my computer is powered or not. Since ...
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0answers
39 views

PSU with g3220 and 750TI

I'm trying to find out what psu wattage I need for a build with a pentium g3220 and a GFX750 TI, next to this one ssd will be used. If possible I would like to use a 350W psu I already have lying ...
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0answers
22 views

ATX PSU: Pin 9 reads a lower voltage when plugged into motherboard

I'm pretty confident that the PSU is bad in this computer, but I want to understand what my multimeter is telling me. With the PSU plugged into the wall only, the multimeter says that pin 9 is a ...
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0answers
17 views

PC Shut Down & Blue Screening?

I have recently upgraded my motherboard in my computer before that I had a standard small board but now I have a big gaming one (forgot the exact size names think its atx or something) Anyway, ...
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0answers
36 views

Advent T1 (All in one PC) - screen going blank

I have an Advent T1 (all in one PC) that suffered from the under powered 12v 15amp PSU issue outlined here The computer would run for a short amount of time, and then power cycle. I've replaced the ...