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My Desktop Computer with a Windows 7 64bit System freezes randomly an estimated 1-2 times a day, depending on the usage. The moment it freezes, nothing works anymore. I can´t move the mouse, use CTRL-ALT-DEL or anything similar and have to reboot the computer. As I’m doing my work on it, that is unacceptable.

System Specs:

  • AMD FX 4100 Quad Core
  • Motherboard: ASRock Extreme3 R2.0
  • Windows 7 64 bit (fresh install)
  • DirectX 11
  • 8GB RAM (2x Kingston KVR1333D3N9/4G)
  • NVidia GeForce GTX 560 Ti
  • Main Programs installed: SQL Server 2012, Visual Studio 2012, Office 2013, Adobe Acrobat

I´ve been having this problem for over a month now and can´t find the error. What I´ve done up to now:

  • Fresh Windows 7 64bit install
  • Updated BIOS to latest Version
  • Exchanged both RAM-sticks with new DDR3 RAM (2x Micron MT8JTF51264AZ-1G6)
  • Changed the BIOS settings for the RAM-sticks to manual, according to the settings suggested by motherboard manufacturer
  • Updated the GeForce driver
  • Updated LAN-, USB- and audio-drivers
  • Checked the Windows error-log and found nothing relevant (Event-ID 41, Category-ID 63 = System rebooted unexpectedly; Event-ID 6008 = system was unexpectedly shut down)

I think that was it and I haven’t missed out on anything. My system is still freezing randomly. I bought the computer a year ago and experienced no problems until I reinstalled a fresh copy of Windows 7 on my main partition. All problems have occurred since then.

Have I missed out on anything? I would greatly appreciate any help, as this error is turning out to be very annoying and time consuming.

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migrated from Sep 11 '13 at 13:00

This question came from our site for system and network administrators.

This has nothing to do with systems adminstration, and will likely be moved/closed. – Dan Sep 11 '13 at 12:58
I would almost put money on it being a HDD problem. – Ramhound Sep 11 '13 at 13:17
@Chris, I have Windows 7 x64 running on a Corsiar Gen 4 SSD and all files stored on sata 3 raid array with crossfired 5850s. My system randomly freezes as well. I didn't have the issue with Windows x86, but only when I switched to x64. I too have tried everything in the book without resolve. You may just have to chalk this up as an OS issue and live it, else move back to x86. Reformating and reinstalling doesn't fix the problem. – Josh Campbell Sep 11 '13 at 14:12
@Chris, I just noticed this, but I should mention that I also have the ASRock Extreme3 870 R2.0. and 8gb Kingston RAM. Purhaps that's the key. – Josh Campbell Sep 11 '13 at 14:15
@Ramhound: It is not a HD problem. I have checked the disk for errors and didn´t find anything... – Chris Sep 11 '13 at 21:08

I would check using a SMART tool the condition of your hard drive.

I would also look to see what programs are running and may use MSCONFIG to remove what is not necessary. This may result in at least narrowing it down to a software issue.

Make sure Task Scheduler is not doing anything at funny times!

Remove your machine from the network for a while to see if it due to an update (or some network activity).

It could be faulting RAM (although I would suspect this to result in a BSOD). It could be the CPU...

Do a system repair using the original Windows DVD.

If the system was OK but only recently playing up, think about what changes you made. Either roll back (system restore) or uninstall the drivers/software etc to see if that resolves the issue.

Either way, make sure you are backing up!

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Thanks for answering. I Checked using a SMART Tool: Everything is fine. Maybe the LOG will show up something when the computer freezes the next time. Task Scheduler is doing nothing it shouldn't do. Removing machine from network might be an option - I'll try that out. It cannot be faulty RAM, as I have exchanged the RAM with freshly bought RAM. Why should I repair the system if it´s a fresh install? I don't see the point there. Any other suggestions? – Chris Sep 11 '13 at 21:16
Is the screen BSOD or not? Are all Window Updates up to date? – Dave Sep 12 '13 at 7:12
No, the system freezes. No, mouse freezes, Ctrl+Alt+Del not possible - I need a hard reset when it happens. All Windows Updates are up to date... – Chris Sep 12 '13 at 7:29
@Chris, when this happens, does the lights and fans remain on/spinning? What PSU are you using? I know you said temps are fine, but not sure what temps you monitored; Can you search for a program which measures your CPU and GPU temperatures and monitor it please. – Dave Sep 12 '13 at 7:40
Lights and fans remain on and spinning. I'll have to monitor the temperatures, but I don't think it has something to do with that. Strangely enough I don´t get any freezes when I play games and temperatures rise. I can´t recall a crash whilst playing a game, e.g. Skyrim, Grid 2, Battlefield 3, ... – Chris Sep 12 '13 at 7:52

Try running it in safe mode for a few hours see if it freezes, it could indicate it's software as its obviously running on minimal services etc when in safe mode.

Play around with the Restart on System Crash in System Properties > Advanced setting, it might allow you to see a/the blue screen instead of locking up when allowed to crash or restart.

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Thanks for the answer. Changing the system properties as you suggested doesn't work. There is no option that handles freezing. Running the system in safe mode for a few hours could be quite interesting. I´ll have a go at that... – Chris Sep 11 '13 at 21:15
I remembered now when this was happening to me on an older machine, it was the GPU, no symptoms whatsoever I had to try a different GPU to notice. Check if your motherboard has blown capacitors. – Recct Sep 12 '13 at 8:05
How do I check that? I stated in another comment, that my GPU seems to be working fine, as I don´t have problems when playing games. I don´t experience crashes whilst playing (e.g. Battlefield 3, Skyrim, Grid 2,...). Those are graphical intense games. – Chris Sep 12 '13 at 8:09
Ah ok then about the GPU. About the mobo that was a separate note, open the case and have a hard look at it, check the connectors for HDDs etc as well, experiment with plugging HDs in different sata/ide what have you ports. – Recct Sep 12 '13 at 9:27

You probably have the bad capacitator issue. It yields completely random freezing.

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Change HDD Sata cable and clean cpu cooling system. If that doesn't work then do the following:

  1. Open Documents then double click on computer (left hand side bottom of screen).
  2. Put cursor on Local disk C and RIGHT CLICK, then go down and click on properties.
  3. A new window will open. At the top click on tools then click on Check now.
  4. Another window will open, TICK both options then click on start.
  5. A warning window will come up saying it can't be done as the disk is in use but would you like to do the task when you restart your pc next time?
  6. Click yes then restart your computer.
  7. While the computer is rebooting DO NOT TOUCH ANYTHING AT ALL. It will take the PC 20-30 mins to reboot but it will clear all errors and fix all problems.

Hope this will help.

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