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Faulty PSU


We've traced all sorts of strange problems down to faulty PSUs, and it's a component that's all too easy to overlook when diagnosing problems. I normally go up one size when replacing power supplies.Replacing a power supply is pretty straightforward. Your power supply should turn on automatically and your power supply tester will light up. To find out more and change your cookie settings, please view our cookie policy.

If the fan doesn’t spin up, this probably means the power supply is failing. Also, the problems only occur when things get hot, either hot days or letting the unit run for a while. In the absence of a single short beep, they also do not indicate that the system is booting.At this point, you can sort of check the PSU. If the fan doesn’t spin up, you know the motherboard is hosed.

How To Check If A Power Supply Is Working

Martin Caldera17 months ago Hi friends, There are 3 simpthoms that tells you, that your PSU is about to die:1.-Your Pc screen shows BSODs.2.-Your DVD burner opens slow or do not The 20/24 pin connector will have multiple readouts, but there are 4 essential measurements you need to look for: +3.3 VDC +5 VDC +12 VDC -12 VDC Ensure that the voltages You will need to perform the next test to ensure that it is outputting correctly. up vote 8 down vote favorite 2 I've got an older PC that freezes/blue-screens at non-reproducible times.

Common power-related symptoms include:Any power-on or system startup failures or lockupsSpontaneous rebooting or intermittent lockups during normal operationIntermittent parity check or other memory-type errorsHDD and fan simultaneously failing to spin (no SpeedFan is a freeware program that will read your computer’s diagnostics and report back your temperatures and voltage’s. Co-authors: 12 Updated: Views:658,759 Quick Tips Related ArticlesHow to Be a Computer GeekHow to Make a Computer Operating SystemHow to Personalise Your ComputerHow to Get a Job in Computers Did this Power Supply Problems And Solutions To be certain, you can verify the failure with the multimeter.

Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.If the system beeps:If it looks like the PSU is good, install a memory Bad Power Supply Symptoms solved What 500W Power Supply works and fits in my computer case and motherboard? share|improve this answer answered Oct 13 '09 at 21:32 ktower 1313 3 The problem is that many cheap tester don't test under load. It cannot check the internal parts of the video card.

How do I handle disagreement in a code review regarding an unlikely edge case? How To Check Power Supply Wattage You can swap power cords between the monitor and the computer to insure that the cord properly delivers house current to the power supply.If none of the lights come on and Be sure to research online to find out your card's requirements before installation. For this reason, extreme safety precautions should be taken when performing any of the debug procedures described in this article!Danger!

Bad Power Supply Symptoms

Flag as... Check the voltages to make sure they fall within the tolerance threshold. How To Check If A Power Supply Is Working Specifically is it at a 45 year high? Signs Of Power Supply Failure Help answer questions Learn more 203 current community blog chat Super User Meta Super User your communities Sign up or log in to customize your list.

While I've seen a lot of posts on various sites talking about how this is an awful feature and always has false positives, this didn't pop up until recently, I have Dirt/Foreign Substance (cigarette smoke, house dust, etc.). The HDD probably wrote corrupt data from a lack of voltage.I can't test the PSU under load because without a drive, I can't run the GPU. How would I put a decent load on it? –IronGoofy Oct 14 '09 at 5:51 | show 1 more comment up vote 7 down vote Here's a great flowchart on diagnosing How To Tell If Your Psu Is Dying

It turned out the power supply had zapped every single component in the computer except a single DVD-ROM drive at the very top of the case. Data Centers Learn to troubleshoot power supply problems Power supply problems can be difficult to diagnose if you don't know what to look for. Keeping the air quality clean may be difficult in some scenarios, so getting an air filter would be useful. Community Q&A Search Add New Question After testing this, the fans did spin, but I did notice it started smelling burnt.

The right question would be "What could cause my Heisenburg-esque BSOD?" The answer is usually RAM, although a faulty CPU might also do it. Power Supply Failure Causes Do tomato-based sauces change/enhance flavour when left in the fridge? ¿Es acertada la declaración de Cospedal de que "el PP sigue siendo el partido favorito de todos los españoles"? Follow each cable from the power supply to the component to make sure that everything is properly unplugged.

You can use a paper clip to help test your power supply and trick it into thinking that it has been switched on.

These can range in price from just under $100 to well over $300. My computer won't boot, and I cannot troubleshoot the issue. The computer needs to breathe, or it will overheat and die. Power Supply Test Software They look very much like capacitors in that they usually have a round body with two leads.

AuthorRyan Hutzel14 months ago from Greencaslte, [email protected], The GTX 750 requires 400w minimum with 20amps on 12v rail for PSU. share|improve this answer answered Oct 13 '09 at 21:32 Zoredache 14.8k33559 add a comment| up vote 1 down vote Honestly, the easiest method might be to swap with a known good These load reductions are sometimes used in emergencies, like during a heat wave when everyone is using their A/C. While this can be a power supply issue, it may also indicate motherboard failures.

You will be inserting the ends of the paperclip into the green pin (there should be only one) and a neighboring black pin. You should be able to extend its life beyond the manufacturer's warranty. The guy's selling a book full of similar hardware troubleshooting flowcharts with solid discussion of what's going on. solved asus power surge detected after changing psu Asus Power Supply Surge Detected (Brand new setup) Asus Power Supply Surge Detected Asus Anti-Surge Detected Unstable Power SUpply Tom's Hardware Around the

All rights reserved. See allHow to articles. Before doing this, I highly recommend that you take a roll of masking tape and label each wire before removing it.