At this point it should be at a logic 1 state or greater than ~ +2.5 volts keeping the PSU's main outputs off. Are you seeing any activity at all? Set it to 1333Mhz(which it should by default or perhaps 1066). When the PSU has completed enabling its primary converter and the +5 and +3.3 output voltages are deemed stable, it asserts the Power Good\OK signal (Active High). have a peek here
I have even seen basic power supply testers say a power supply is ok, only to fry a replacement motherboard because the power supply was putting out excessively high voltages. Note: Do NOT disconnect the fan on the CPU! Tried new motherboard, wouldn't post, then tried old motherboard and also wouldn't post? If you now have +5v and the PC tries to boot, you have a bad hard drive. http://www.tomshardware.com/answers/id-1650229/bad-power-supply-motherboard-fault.html
If all remains OK, The hard drive is bad. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. At that point I thought there may be an underlying cause.The bugginess of the graphics during games around the time of failure lead me to suspect the GPU was hogging power You should get a tone or indicator lights for the missing ram, depending upon your motherboard, and the cpu fan will start spinning.
Tabasco erok Mar 19, 2015 at 08:29pm Capacitors indeed Ace! Buy Now True StoryI was at a client's house to have a look at her computer. While this can be a power supply issue, it may also indicate motherboard failures. Bad Power Supply Symptoms It is possible for both the PSU and Motherboard to be bad!
If it is a normally closed type circuit, leave the pins unjumpered. The power up process is now complete. Below is a list of common factors that send a unit to its grave. If you are plugged into a power strip or APC be sure to test the exact outlet the PC's PSU will be plugged into.
Tom's Hardware Around the World Tom's Hardware Around the World Denmark Norway Finland Russia France Turkey Germany UK Italy USA Subscribe to Tom's Hardware Search the site Ok About Tom's Hardware How To Test Motherboard For Faults Image Credit: ShutterStock 1, ShutterStock 2 Previous PostWhich Is The Better Reader - Kindle Vs iPad [Geeks Weigh In]Next PostHow the Internet Works 27 comments Write a Comment Leave a Reply 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 NEVER, EVER use a wriststrap when working around any equipment that may have any electric potential or that is "Live" connected to the line power.
If so, share it with you fellow TechRepublic members. http://www.brighthub.com/computing/hardware/articles/85145.aspx Dirt/Foreign Substance (cigarette smoke, house dust, etc.). How To Tell If Power Supply Is Bad Or Motherboard Cayenne DanA7234 Mar 23, 2015 at 10:32am What I tend to do is listen for POST beeps which is a good indication it's not the system board. Rexus Pst-3 Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.At this point, if the system doesn't work, it's either the video card or an inadequate PSU.
Tried the 4 different ram expansion modules. http://stricklandresearch.net/how-to/power-led-coection-problem-motherboard.html Don’t fully secure it in place until you power up the system for a function test. Required fields are marked *Comment Name * Email * James Bruce 631 articles James lives in the middle of nowhere with his wife, son, and chickens. If all remains OK, you should replace your hard drive. How To Check If A Power Supply Is Working
If the Power Good\OK signal is, however, high or logic level 1 (2.5v or higher) and all the aforementioned voltages and signals are correct, you can conclude your PSU is good 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 We have either rectified any problems with them or found they are all OK. Check This Out Members have access to different forum appearance options, and many more functions.
It is greatly appreciated.RegardsMartin 4 answers Last reply Apr 19, 2011 More about power supply motherboard problem else jscApr 19, 2011, 8:06 PM Work systematically through our standard checklist and troubleshooting How To Test A Motherboard With A Multimeter But--the power good signal is off which says the PSU is bad. Understand that just because you have a Power Good\OK signal, does not guarantee +- 12V is ok, although with a well designed PSU, there is a high probability that most of
Support service. Comments are not for promoting your articles or other sites.sendingYOUDIEMOFO5 months ago Electromagnetic Pulse went through the whole computer eh....?!?Now I think I have heard it all.... except for the cpu, cpu fan, and power supply. Motherboard Failure Symptoms It slowly got worse and worse until the computer began freezing and forcefully rebooting.
We have also determined the PSU On signal is correctly enabling the PSU's main power conversion circuit. Version 1.0 Copyright © 2007-2008 AITechSolutions.net. All disclaimers apply. this contact form In the end, the only other devices that powered up with the computer with a working PSU were the system case fans.
Slide the new supply into the case and connect all the power leads, starting at the motherboard. Or motherboard problem? Make sure you plug the CPU power cable in. Update : I tried changing power supply, still same condition Reply With Quote 02-24-15,06:05 AM #2 Witchdoctor View Profile View Forum Posts Member Join Date Apr 2014 If you have
Are you sure they are slotted firmly? Power supply is okay. When a power supply burns out it sometimes literally burns out and you can smell it. It is this clock signal that steps the CPU from instruction to instruction.
Learn which one is too blame. Also make sure the input voltage range selection switch on the PSU is set correctly. If you pay your bill, the power company and the distribution network supplies the power! Try to borrow a known good PSU of around 550 - 600 watts.
For most of the tests you will be required to use a DMM or Digital Multi-Meter. Asus, for example, provides a tool that reports the voltages being supplied to the motherboard. All rights reserved. One is the +5V Standby current which can be measured on pin 9 and should be, amazingly, + 5v.
CD-ROM – Again, only take out the power cable. Keep it, along with the rest of the computer, under 80 degrees. I also discussed PSU and Motherboard related circuitry design.