power supply problem - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Click Here to Login
Closed Thread
Thread Tools Display Modes
Old 05-30-2009, 10:22 AM   #1 (permalink)
Ultra Techie
advancedgeek's Avatar
Join Date: Sep 2006
Location: Brisbane, QLD, Australia
Posts: 643
Send a message via AIM to advancedgeek Send a message via MSN to advancedgeek Send a message via Yahoo to advancedgeek
Default power supply problem

hey guys, very recently i have this problem where my computer just shuts off which most probably is a power supply failure since it has done it 2 times already in the same day. I have not added or removed any hardware since last year so I am pretty sure that it is not a issue with not having enough power to run all the stuff i have in my computer. Anyways I also heard a faint buzzing noise while my power cord is plugged in properly and i don't know if that is the problem or not. Also now it would not boot since I removed everything except the 24pin connector that is stuck on my motherboard and i heard a high frequency sound and turned off the power immediately and ended with a fading high frequency noise which i might've fried my mobo or something. I do not know what error it is since my case speaker is broken and i have never heard and POST beeps ever which my current motherboard which is annoying to troubleshoot.

Graphics card: Inno3D Nvidia GeForce 8800 GTS @ 640/940 (core/memory)
MB: Gigabyte GA-965P-DS3 v3.3 F12
RAM: 2 Kingston HyperX DDR2 800MHz (4GB total)
CPU: Core 2 Duo E6320 @variable rates (will fix my fan problem soon and overclock high again)
HSF: Thermalright Ultra 120 Extreme & Antec Tricool 120mm fan
PSU: Delta Serverpower 550W
HD: Seagate 400GB ST340032AS & Excelstor 80GB (both SATA)
Case: don't know what case it is but it is very crappy
Optical Drive: Lite-on 16X DVD+&- RW DL (died) using a CD-ROM drive until I get a new blu ray burner or whatever i can get


**been afk from tech-forums for a while so this is the updates specs**
advancedgeek is offline  
Old 05-31-2009, 09:36 AM   #2 (permalink)
Super Techie
Join Date: Aug 2005
Posts: 326
Send a message via AIM to dipique
Default Re: power supply problem

Sounds more like an overheating problem to me. Try opening up the case and blowing an external fan into the case and see if it still turns off. Also, if the option is available, try running a utility that monitors temperatures--specifically processor, video card, and hard drive. The processor is probably the culprit if it is overheating. When you open the case, check for case thermometers. These can go defective and cause the computer to restart.

A telltale sign of overheating is this: if you leave it alone for a long time and it stays on for a while, but this when it turns off and you restart it, it turns off again almost right away.

The whining pitch is certainly some power supply, but not necessarily the computer one. It could be three different issues: a bad bearing on a fan, swelling/leaking capacitor, or coil whine. All three are a good reason to get a new PSU if it's the computer PSU. It may also just be the adapter for your speakers though, so check before ordering a new one.


dipique is offline  
Old 05-31-2009, 12:15 PM   #3 (permalink)
Wizard Techie
CrazeD's Avatar
Join Date: Feb 2006
Location: Maine
Posts: 3,736
Send a message via AIM to CrazeD Send a message via MSN to CrazeD
Default Re: power supply problem

Usually a high pitched squealing/whining noise is a capacitor. Sometimes it is a squeaky fan but, that's easy enough to test.

Closely inspect your motherboard for leaking or bulging caps. If you find any, and have knowledge of soldering, they're easily replaceable.

I agree that it sounds like a power supply issue. I definitely wouldn't continue to try and use the PC until you isolate the culprit. Of course the obvious first thing to try is a working PSU.

Also, remove all unessential components that suck power. When my PSU was dying, it would work fine with minimal power usage but with everything connected it couldn't handle it and would shut down or restart a lot.

Intel Q9400 | Gigabyte EP45-UD3P | G.Skill 2x2GB DDR2 1000 | XFX HD5870

Need website help? PM me!
CrazeD is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
strange power problem: no boot, LED flicker, angry floppy drive AskMeAboutRNA Hardware Repairs and Troubleshooting 4 09-04-2008 07:36 PM
I want a new video card. Silverfury New Systems | Building and Buying 25 04-09-2008 12:05 AM
Power supply issues - Dell inspiron 531 Yuffles System Upgrades 16 02-17-2008 02:59 PM
Dell laptop power supply DaPurpleRT Laptops and Notebooks 2 12-30-2007 01:07 PM

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:47 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.