1
vote
1answer
27 views

Computer can be powered on once after new SSD install

My computer has a strange behavior since I installed a new SSD (Samsung Evo 840). When I pushed start button the first time after connecting the new internal SSD everything was ok. I managed to ...
0
votes
0answers
19 views

Computer can't boot

I have a 1 year old PC and the last weeks, when I press the ON button the PC doesn't power on ( Like I didn't press the ON button ). I have to plug and unplug a few times the power cord in order to ...
-1
votes
0answers
25 views

Computer wont turn on - flashing light indicator

I am having a strange problem with my computer, and need a diagnosis... The computer was just fine yesterday, but today when I try to turn it on, the light indicator flashes, the fans also get a short ...
-1
votes
1answer
43 views

why wont my custom built PC boot? [closed]

I turn it on and the lights turn on the fans are spinning but no picture turns up, and when it's on it'll sound like its powering down and then it'll fasten up again and it'll keep doing this. My ...
1
vote
1answer
43 views

Something fried in PSU, but PC still works?

I just finished cleaning the dust from my desktop PC with compressed air. When I put everything back together and plugged it to power, there was a brief flash of light and another after I booted it. ...
0
votes
0answers
23 views

Failing CPU, PSU or Motherboard?

So i have a HP desktop and when I press the power button all sounds well (fans, hard drive) but then it turns right back off within 7 seconds. There are No beep Codes, or noises. So I am trying to ...
0
votes
0answers
40 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
votes
2answers
88 views

Troubleshooting PC power-on irregularity, narrowed down to ASUS VRM Spread Spectrum, why?

There are many resources online regarding the issue when the PC shutsdown a few seconds after pressing the power button. I have a variation of the problem which is reproducible under certain ...
0
votes
2answers
57 views

Computer does not boot, often

I've ran into a issue with my computer that it does no longer reach POST, but simply powers on for a fraction of a second and powers off. But this is not always, some times it boots just normally and ...
0
votes
1answer
151 views

Toshiba Satellite C850 boot loop

I've got a Toshiba laptop acting strange on me. Any thoughts appreciated. C850-11C PSCC2E AMD E1-1200 APU Windows 8 UEFI Problem: Laptop cant restart. If i shut down the OS or restart, or it ...
1
vote
1answer
86 views

Hard drive not found after blue-screen

I met a blue-screen and then a problem saying "Hard drive not found" when I was re-booting my system. But when I plug the power cable of the hard drive and re-insert it, the system can be successfully ...
0
votes
2answers
101 views

Computer wont boot. No picture on monitor, no usb power plus more

Tried to turn on his stationary computer after being turned off for one night. It is a few years old, components are somewhat strong (Was built to be a gaming pc). No picture on screen, tried two ...
1
vote
1answer
69 views

Laptop won't boot without power cable connected

My laptop is an Acer Aspire 5750 that used to run Windows 7 but is now dual-booted with Ubuntu 12.04 (now my predominant OS). Recently an annoying bug developed in that my laptop won't boot without ...
-1
votes
1answer
28 views

After building first computer, powering on works for only 2 seconds until it switches on and off infinitely

I have built my own pc, with z87x - UD4H / i5 4670k / 770 GTX. I installed the CPU / stock fan / connected it to the MOBO. Connected the 24 pin power supply Connected the GPU / Ram / Sonar DX audio ...
0
votes
0answers
29 views

No Video Until I Restart My Machine On First Boot, Then Black Screen Before Windows Loads Desktop

Here are my computer's specs. Windows 7 Intel i5 3570k EVGA 780 When starting my computer for the first time in the day, nothing will show up on the screen until I push the button again and turn it ...
6
votes
1answer
188 views

Debugging a “Somewhat” Faulty PC Component

TL;DR: I have a component that fails very infrequently, preventing my computer from POSTing (I am suspicious that this may be a motherboard issue). Since I cannot reliably reproduce this error, what ...
0
votes
1answer
342 views

The registry cannot load the hive (file):

Yesterday I had a fully working PC... I was typing away when suddenly the screen went black. I thought there was a power cut but then realised it was only my PC that had fallen silent. Because there ...
1
vote
1answer
67 views

Desktop Computer - One Second Shutdown

Hello superuser community. My computer just died on me yesterday, I've spent over five hours trying to figure out what broke but had no success. My computer's hardware CPU - Intel I5 2500K @ ...
1
vote
0answers
408 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 ...
2
votes
0answers
52 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 ...
0
votes
2answers
93 views

No SATA drives after PSU Upgrade

I know this sounds a lot like this but I just confirmed that my MBR is fine as well as the SSD drive in question. What happened: I upgraded my be-quiet 700w PSU to the 1000w dark power pro. When I ...
1
vote
2answers
240 views

New video card HIS 7790 OC 1GB: sytem doesn't boot

I've upgraded my old video card Gygabyte 7750 to HIS 7790 IceQ Turbo. After installation of card onto mobo, plugging power into video card and powering on, system starts but doesn't boot. Power is on, ...
1
vote
1answer
91 views

Computer making beep sounds

i left the computer downloading with IDM and told it to shut down when the download is finished, when i came back i pressed the power button and i got 1 long beep and 2 short beeps then it keeps ...
0
votes
1answer
61 views

PC will not power on with normal power supply

My ASUS M2N-SLI motherboard would not turn back on after running fine for 5 years. Connected a new (still in the box) 430W power supply - ATX 2.1 - the system powers on. The power supply doesn't have ...
3
votes
1answer
100 views

Is my power supply dead?

I recently bought a new NZXT Phantom case and went ahead and moved all my components from the old case. It took a while to get some things in, and then to do a little bit of cable management (as much ...
0
votes
0answers
141 views

Bios access key not available on screen. Will not boot

I recently changed the power supply unit in my home theater PC. Computer will not boot. Won't go past 1st screen. Shows somme bios info (version memory dual channel etc) . Also says F11 for boot ...
1
vote
2answers
1k views

After being shutdown, why won't my computer start without leaving the power unplugged first?

For the past few months, whenever I shut my computer down fully and leave it off for more than a few minutes, it won't start back up without an elaborate ritual. This is an ordinary shutdown, so the ...
0
votes
1answer
99 views

Motherboard LED comes back on without PSU switched off

Wondering if anybody has experienced the following issue Shutdown Windows, PC shuts off, Motherboard Start LED remains lit Turn off Power via PSU rocker switch Motherboard LED takes 2-3 secs to ...
1
vote
0answers
408 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 ...
1
vote
1answer
278 views

Desktop PC won't turn off (turns back on)

I have an old (2006/2007) Medion 8818 desktop of which i replaced the broken FSP300-60GTM 300W PSU with a new LC500H-12 V2.2 500W PSU. It has no HDD. Thermaltake's Dr.Power II said my new PSU is fine. ...
0
votes
2answers
189 views

Replaced Dead PSU, Now Blue Screen and Continual Restarts at Windows Splash Screen

A power failure killed my PSU in a Windows XP machine. It would not power up. It is an older HP pavillion m7590n. I replaced the PSU and it now powers up, goes to the windows XP splash screen for ...
2
votes
3answers
292 views

Is my PSU failing or is it my motherboard?

Let me first start by saying that I searched for other questions that matched my situation and I wasn't able to find any. So, here's my issue: Sometimes, when I turn on my desktop, it does not ...
-2
votes
3answers
159 views

Computer powers off a second or two after being powered on unless

I have a computer with 2 SATA HDD and an abit KN9 motherboard. If I set the CMOS jumper to the clear position, and if I disconnect one or both of the HDD, then my computer powers on --- at least it ...
0
votes
0answers
91 views

When my computer powercycles after resuming from sleep

My issue it somewhat similar to this one - Computer continuously power-cycling in terms of symptoms, but different in general. If I put my computer to sleep manually, or shut it down, it will work ...
1
vote
0answers
96 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 ...
1
vote
0answers
200 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 ...
2
votes
1answer
687 views

New computer won't boot

I've recently purchased a set of components and set about building my own desktop. It is not booting and I am stuck. When I hit the power button, the fans spin, but that's all. There is no video. ...
1
vote
0answers
145 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 ...
2
votes
0answers
44 views

PSU and motherboard power up failure [duplicate]

My girlfriend's computer is not booting any more. Here is a list of the hardware and the tests I've made so far: MB: Asus P5QL-E PSU: Thermaltake Toughpower 600W First failure: the PC was off, ...
0
votes
0answers
388 views

Power-on button takes a long time to work after PSU is turned on

I have a four-year-old Dell Inspiron 530 desktop with onboard video and recently it started to show this weird behavior (sorry, it’s a long post…). The computer is connected to a voltage regulator, ...
7
votes
2answers
498 views

New build not powering up at all after connecting psu cables to hard drive

I recently decided to build myself a new, cheap(ish) rig mainly for HTPC use and I have now run into a BIG problem. The system simply refuses to show any signs of life. Problem: When I press the ...
1
vote
2answers
192 views

New PSU New Issue, Fan, Hard drive, Disc Drive Start, Nothing Else

I've been in the chat for the past while and found nothing so I figured I'd come to the front page. For about 6-8 months I've had issues with my computer not starting when it was cold and even then ...
1
vote
1answer
147 views

Computer doesn't boot after new psu installation

I've purchased a new PSU (Chieftec APS-550C) and installed it into my computer. After that my computer refuses to boot up: it spins up all the fans and drives, stays in this state for ~10 seconds ...
0
votes
3answers
2k views

Computer making strange sound when turned on, ever since power outage

Recently we experienced a power outage, and the PC was off. However, once the power came back, I switched on the PC and heard a strange noise - almost as if the hard disk or fans were struggling to ...
1
vote
0answers
217 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 ...
5
votes
2answers
450 views

On warm (re)start, computer powers off instantly. After unplugged, it starts and runs ok

My computer fails to start from any power-state other than power-off: ASUS UEFI MB (F1A75-V Pro) with AMD Llano APU 12G RAM (passes memtest) 3x HDD Thermaltake semi-passive PSU Cold start works ...
3
votes
2answers
509 views

a pci-e card doesn't work with the other two graphic cards

A PC machine in the company has three 16x pci-e slots, let's call them A B C (A is closest to the CPU, C is furthest). There has been two graphic cards installed in it (gtx680 in A and gtx560 in C, ...
0
votes
1answer
2k views

Switching power supply from 115V to 230V and back again allows PC to boot--why?

I support a refurbished Dell Dimension 3000 PC (c. 2004) which occasionally will not boot: no POST or video signal, but the fans will begin blowing and an LED on the mainboard lights up. I believe the ...
0
votes
2answers
266 views

Old HP computer powers off after seconds, hard drive still spins. Power supply? Motherboard?

Someone called me saying their computer keeps shutting off. I brought it home to troubleshoot. It's an HP Pavilion 513c The computer powers on normally, but almost immediately powers off. ...
2
votes
2answers
2k views

Boot up troubles, power related - system always stable once booted

I've got a system that's been causing me a lot of trouble over the last few months. Below is a somewhat lengthy saga of my experience with it but it should hopefully provide some thorough problem ...