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Posted: 4/30/2015 1:11:17 PM EDT
[Last Edit: 4/30/2015 2:05:09 PM EDT by Bigtard]
I'm having a problem with my machine, the likes of which I've never encountered.

I built this one about a year and a half ago, and it has never given me a single problem, until about a week ago.

It runs fine until I let it hibernate, and then it will not reboot. No POST at all.

The LEDs light up, the fans spin, the optical drive powers up, but no POST.

So, I unplug the PSU, let it sit for an hour or two, plug it in again, and she fires right up, resumes as if it never lost power.

It also will randomly stop recognizing the mouse. The mouse just quits working until I reboot the machine. Then, it's fine again.

At first, I thought that combination of symptoms must mean a bad MoBo.

I happened to have an identical, new in the box MoBo here, so I swapped it out.

It ran fine for 2 days, then the exact same problems started happening again.



I dunno, Power Supply going bad??

What do the experts think?

For reference, the build specs:

MoBo: Asus M5a97 R2.0
CPU: AMD FX6100
RAM: Kingston HyperX Blu Ddr3 1600 Mhz 4 Gb X2
Storage: Kingston 120 Gb SSD, Seagate 1 Tb HDD 7200 rpm
Optical Drive: LG Blu Ray reader/ DVD writer, don't remember the model number
GPU: Asus Radeon HD 7750 1Gb Ddr5 800 Mhz
PSU: Corsair CX500M
OS: Win7 Home 64 bit

I am thinking now that PSU is a little small at 500 watts, and is just getting tired.
Link Posted: 4/30/2015 1:46:32 PM EDT
[Last Edit: 4/30/2015 1:47:23 PM EDT by Nessus]
I would think it's the PSU too. Not a very good make.
Link Posted: 4/30/2015 1:49:10 PM EDT
I would do the usual troubleshooting. Pull everything off the MoBo, then power it up. It will fail POST due to no RAM,but that's okay. Now put one stick of RAM in, and restart. If that goes well, then power down and put the video card back in. If that goes well, then put the other stick of RAM in. Where it fails in this process, would point to your problem.
Link Posted: 4/30/2015 1:50:23 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Nessus:
I would think it's the PSU too. Not a very good make.
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I would hardly call a Corsair PSU a bad choice.
Link Posted: 4/30/2015 2:05:03 PM EDT
You can test the power supply. I wouldn't assume that it's the PSU.

I would unplug everything from your USB ports, except the keyboard, but most specifically the mouse as it's suspect due to prior behavior. Now try a few hibernate/boot cycles and see what happens.

If you still get a boot failure, unplug the PSU and plug it back in after 30 seconds or so (or once the fans stop running). Does it boot properly now?


Most hibernation boot failures I've encountered have been due to installed programs, BIOS settings, or USB devices failing and halting the boot. Usually if there's a problem with the main system components you'll see evidence elsewhere as well, like during normal boots or other PC operations.
Link Posted: 4/30/2015 2:08:48 PM EDT
The keyboard and mouse are hardwired with old school PS/2 connectors. I typically run the machine with nothing in any of the usb ports, except for occasionally a set of headphones.
Link Posted: 4/30/2015 2:19:40 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Firefinder37:
I would hardly call a Corsair PSU a bad choice.
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View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Firefinder37:
Originally Posted By Nessus:
I would think it's the PSU too. Not a very good make.
I would hardly call a Corsair PSU a bad choice.


Corsair do not make their own PSUs. This model is made by CWT which is questionable. It may not provide the wattage it claimed.
Link Posted: 5/4/2015 2:09:43 PM EDT
It was the PSU, after all.

I replaced it with a known good Corsair TX650, and all is well again.
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