Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Possible PSU issues, how to tell.

28 Apr 2015   #1
Brendan M

Windows 7 Ultimate
 
 
Possible PSU issues, how to tell.

Hi there,
As per a previous post, my computer died and I ended up installing a new MB, CPU and 32 GB Ram.
New motherboard - RAM

Anyway, now my computer is having startup and running issues.

By this I mean that my pc might run fine for hours and then suddenly shutdown and the cooling fan go ballistic,
OR it may just shutdown,
OR it might not start at all but give a few pathetic beeps and spin the fan a bit then go quiet and then repeat, OR upon hitting the power button the cooling fan might go Billy bananas and nothing else, just the crazy fan, OR it might run perfectly.

So, could this be a psu issue? My problem is I lack testing equipment or spare psu to check it out and as i live in Cairo/Egypt, I will be forced to bite the bullet and buy a new psu without really knowing if there is something wrong with my current psu.

Any hints/tips/ideas i should try first?

Cheers
B


My System SpecsSystem Spec
.
28 Apr 2015   #2
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

Do you think it's possible that your new motherboard might be defective? Did you have a similar problem when you had the old motherboard?

Normally, I'd suspect the PSU. But they are hard to test meaningfully and you have no known good spare to swap in. So the new motherboard can't be ruled out.

I don't think there is much you can do as a test unless you have sophisticated testing equipment. You can test PSUs to see if they will turn on and are not outright DOA, but that doesn't help you with an intermittent problem.

It's a tough call. I'd probably assume it is a PSU issue and buy a replacement. If that didn't fix it, then the motherboard becomes suspect.

I assume you've reseated all cables.

Have you run memtest86+ on the RAM?

Have you been monitoring CPU and motherboard temperatures and fan speeds with an application designed for that purpose?

What PSU brands and models do you have available at local dealers? There are a small handful (4 or 5) brands that are likely to be good to high quality, but the rest can be average to horrible.
My System SpecsSystem Spec
28 Apr 2015   #3
Brendan M

Windows 7 Ultimate
 
 

Thank you for your reply ignatzarsonic.

If/when i do purchase a new PSU, what are the brands I should stick to?
Also how do i tell what power rating i should purchase? Stick to the same power rating as the current one, 850W?
My System SpecsSystem Spec
.

28 Apr 2015   #4
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

You don't need anywhere near an 850 watt PSU. Did someone tell you that you needed that much power? Did you have any choice when you bought the PC?

Some Corsairs are OK, some are average.

Look for a 500 to 550 watt standard ATX PSU from any of these brands:

Seasonic, XFX, EVGA, Super Flower, Corsair, or Antec.

Make a list of those you see and report back with prices and I'll try to give you specific advice.
My System SpecsSystem Spec
28 Apr 2015   #5
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

With Corsair, from my experience, I would not go below an HX750.

Corsair HX and HXi Series

With EVGA, I would stay with 550 Watts or higher. Personally, I recommend EVGA

EVGA - Products - EVGA SuperNOVA 550 GS Power Supply - 220-GS-0550-V1

EVGA - Products - EVGA SuperNOVA 650 GS Power Supply - 220-GS-0650-V1
My System SpecsSystem Spec
30 Apr 2015   #6
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Hello Brendan now mate this is what I always suggest folks use to try out the PSU now depending on the brand of motherboard the section for the PSU output be different to the one in the pic which is my Asus Ivy Bridge one - Nuvoton another common one is ITE but in any case (no pun) the reference to Vbatt is the give away so see my little ditty for doing the test run
Using HW Info
PART A:
You can test the volts on the PSU with HW Info HWiNFO, HWiNFO32/64 - Download < download the right bit version and close the right hand window select Sensors and scroll down to the power section where you will see what the volts are doing see my pic. In my pic the section (Nuvoton) with VBATT is a dead give away you are in the section for the rail voltages. There are other section titles and one that pops up often is ITE
Now the voltage on the different rails have to be within 5% =+/- of what is required or the machine will not work properly if at all.
See this for the rail voltage info
http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061.html (Section 2.)
The original right hand window shows the machine running and is handy for that but for looking at the components in some detail close it and use the main left hand side panel
FOR OTHER COMPONENTS
PART B:
Open each small square with + in it on the section the components are in and then click on the individual component/s (it will highlight in blue) - in the right hand side will appear all sorts of details including brands speeds and other essential info that particular device. See pic for example.
Use PART A:


Attached Thumbnails
Possible PSU issues, how to tell.-hw-info-psu-volts-desktop.png  
My System SpecsSystem Spec
Reply

 Possible PSU issues, how to tell.




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Recording issues with recorders (fraps hypercam etc) sound issues
Hey guys, ive lately been making lets play and walkthroughs on youtube and im having a couple of problems. With my headset, in the background while recording thats like a static noise and i cant seem to make it go away, ive tried multiple recording programs like fraps and hypercam but its still...
Gaming
Win 7 Upgrade-MANY issues!! Search, screen flashing, Outlook issues..
I have recently upgraded from XP to Win 7 and I have encountered so my problems I've lost count... However, I work from home and I need to get these issues worked out NOW... So, I am DESPERATE for answers... 1. Main problem: I have done a full system index 273,852 files and 2 days later...
General Discussion
Removable Disk Issues - Work through issues
Hello Forum, I have two removable disks. One is write protected (D) - I want to know if you can alter that property. I have just put them into my laptop and discovered the presence of New Folder - with a zip folder in it and another folder called Found. Want to know how that got created. ...
Hardware & Devices
Dhcp issues and network connectivity issues since windows 7 x64 sp1
I reformatted my computer because after installing service pack 1 and other updates from Feb 14th my computer has been having issues getting a dhcp from my router. I have a windows 7 home premium 32 bit laptop that works just fine. I also have a ubuntu machine that pulls an address from this...
Network & Sharing
Windows 7 Ultimate 32bit issues with desktop freezing/ other issues
Hi all, Going to try and make this brief, "try" being the operative word here.. I have a Gateway PC running Windows 7 Ultimate 32 bit 4 gigs of ram but obviously not all useable (yet) Dual core processor Nvidia 9800GT graphics Card Corsair 650 watt PSU HT Omega Striker 7.1 Souncard..
General Discussion
Freezing issues and BSoD issues. Help please!
My first problem is that Windows will randomly freeze up and I end up having to hard reboot my system. Windows will also BSOD on me randomly. I've read a number of things online about how to fix it, but nothing seems to help. Also, another problem, I'm not quite sure how to explain this one....
BSOD Help and Support


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 09:38.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App