A general term used when a computer or device becomes unresponsive to any kind of user input. May be caused by hardware *or* software reasons.

learn more… | top users | synonyms (3)

52
votes
11answers
12k views

My computer freezes irregularly

My computer started to freeze at irregular times for 3 weeks now. Please note that this question change with each things that i try. (For additional details) What happens My computer freezes, the ...
26
votes
3answers
6k views

Can a process be frozen temporarily in linux?

I was wondering if there is a way to freeze any process for a certain amount of time? What I mean is that: is it possible for one application (probably running as root) to pause the execution of ...
20
votes
14answers
50k views

Windows 7 is stuck at “Starting Windows” when I attempt to boot computer

Basically, whenever I turn on my computer, it gets to the Starting Windows phase and just stays there. The startup animation still plays, yet it gets nowhere. I have tried booting into safe mode, ...
17
votes
13answers
52k views

How to diagnose computer lockups and freezes?

I built a desktop computer a couple years back with the following specs: CPU: Intel Core 2 Quad Q9300 Yorkfield 2.5GHz 6 MB L2 Cache LGA 775 95W Quad-Core Processor BX80580Q9300 Motherboard: EVGA ...
16
votes
3answers
14k views

How do I troubleshoot hardware issues related to a computer freeze/crash?

What are some common guidelines and issues related to hardware being the issue of a computer crash? What should I look for and how do I troubleshoot these problems? What are some tools that are ...
16
votes
0answers
6k views

How do I troubleshoot a Windows 7 freeze or slowness? [duplicate]

Possible Duplicate: What are the first steps for diagnosing a slow machine? I have a new pc with windows 7 which freezes randomly. I hit every single key on the keyboard and it works again. ...
14
votes
3answers
10k views

How do I create a memory dump of my computer freeze or crash?

As a lot of us encounter freezes or crashes, I am wondering how do I manually initiate a computer to freeze in order to create a memory dump to view and diagnose any issues that may be involved with ...
13
votes
15answers
27k views

Interrupting the “Spinning Wheel of Death”?

I am running Snow Leopard. It is up to date. Every few days, I get the "Spinning Wheel of Death." I can't do anything except hold down the power button to shut off my MacBook Pro. I've even tried a ...
12
votes
8answers
16k views

What do do when Linux gui freezes

I'm running Gnome with compiz in Ubuntu 10.04. Sometimes the gui will freeze. I can move the mouse, but I can't interact with programs. The only thing I can do is go to a terminal window with ...
12
votes
4answers
2k views

How do I quickly stop a process that is causing thrashing (due to excess memory allocation)?

We've all experienced it--some program is asked to do something that requires a huge amount of memory. It dutifully tries to allocate all this memory, and the system immediately begins thrashing, ...
9
votes
9answers
30k views

Why does my computer freeze and make a terrible buzzing noise every once in a while?

Twice now my computer has frozen, accompanied by a terrible, angry, buzzing/beeping noise through the speakers. It is my first build, and as such I'm not really educated enough to even make a guess ...
9
votes
1answer
377 views

increase desktop responsiveness on linux while swapping

All GNU/Linux distributions I tested so far have the problem that whenever the ram gets filled and the system begins swapping, the whole desktop and graphical user interface becomes unresponsive as ...
9
votes
2answers
278 views

How to interrupt emacs when control-g does not work in very large files?

I've run into some kind of O(n^2) or worse behavior when viewing very large (e.g. 128MB) files in Emacs and jumping to the end of the file. I think it may have to do with my coloring algorithm to ...
8
votes
5answers
32k views

Why does my Windows 7 PC / SSD drive keep freezing?

I have a ~1 yr old PC with a primary SSD hard drive. I notice quite often that the PC will freeze for 30secs to several minutes, displaying the "Spinning blue wheel" mouse icon during this period. ...
8
votes
6answers
19k views

Computer randomly freezes when playing games

My computer just randomly freezes when playing certain games. It has happened to me in Battlefield: Bad Company 2, Call of Duty 4, and Blacklight: Retribution. It has not happened to me with other ...
8
votes
7answers
9k views

Why would Thunderbird regularly hang for 10 seconds

I've been using the Thunderbird e-mail client for years on three different operating systems: XP, Vista, Windows 7. On all of these operating systems, it has always had the problem of e.g. I'll be ...
8
votes
2answers
5k views

Solid State Drive Occasionally Freezes For A Minute While OS Is “Beach Balling”

Almost a month ago I bought Intel 330 128GB solid state drive, migrated my data with Intel branded limited-feature Acronis from old HDD to new SSD, optimized with Intel Toolbox and started using it. ...
8
votes
1answer
362 views

What do I do when a program stops responding?

When a program stops responding, and turns gray and the box that says "this program is no longer responding" comes up, How do I know when to close the window, and when do I wait for it to respond?
8
votes
2answers
6k views

Why does Windows 7 mouse freeze after resuming from sleep?

A similar question previously posted at Super User is Why Does My Windows 7 PC Freeze After Waking from Sleep?, but none of the previous answers intially appeared to solve my problem or were the same ...
7
votes
5answers
6k views

Hung process in Windows: Is there any way to see why?

I tried to print a doc in word, and word froze. Is there any way for me to see what resource it's waiting for? I'm using windows XP and word 2007 (though I imagine the answer doesn't depend on the ...
7
votes
5answers
11k views

Why does Firefox cause high-CPU-usage “spikes” every few seconds?

When I start Firefox, I have no problems for a while, but after a couple of days, CPU spikes start to occur. During a spike, Firefox freezes and then stops. Spikes occur every seven to ten seconds, ...
7
votes
4answers
8k views

Installer hangs on “waiting for other installations to finish” despite no other installations in progress

I started an installation of the Xcode 4 developer's preview last night before going to bed. When I woke up, the installation had popped up a message saying to close Xcode first (doh!). I did so, but ...
7
votes
4answers
4k views

How do I diagnose the cause of a freeze after resuming in Windows XP (SP3)?

I have just built a new computer from parts. Whenever I resume from any sleep mode (S1, S3 or S4) the computer freezes within about 60 seconds of the welcome screen appearing. At this point the ...
7
votes
1answer
607 views

Computer unstable at lower temperatures

My computer is playing some strange joke at me, and I'm at a loss. Everybody knows that hot temperatures causes many components to become unstable and even cause damage. When I built this machine, I ...
7
votes
1answer
6k views

Windows 7 freezes with SSD

I have a new SSD (Kingston Hyper 120GB), with a fresh installation of Windows 7 (and several HDDs). For no apparent reason, my computer freezes. I cannot move the mouse, the sound glitches, but after ...
7
votes
1answer
548 views

Firefox: Viewing a specific SVG file turns the system unresponsive

Important: Several SuperUser regulars are currently trying to narrow down the scope and cause of this issue. We are currently seeking willing volunteers to fill out the form here after performing ...
7
votes
7answers
2k views

how to diagnose firefox freezes

How can I find what is causing firefox to periodically freeze?
7
votes
1answer
836 views

Finding useful crash-information in Windows 8 Consumer Preview

I'm currently diving into C# and wanted to play around with the new Metro-styled-applications introduced with Windows 8, so I updated my Windows 7 to Windows 8 Consumer Preview. The problem I'm ...
6
votes
6answers
18k views

How to diagnose repeated freezing of windows 7 (comes back alive in few seconds)

I installed Windows 7 in a 3 year old machine, it installed successfully, took all drivers and running great, but what happens is every 5-6 minutes it freezes for few seconds... 30 seconds to 1 minute ...
6
votes
3answers
7k views

Mac UI locked up. Are there any ways to unfreeze it short of cycling the power?

My Mac's UI has locked up. Is there any way to unfreeze the system short of cycling the power?
6
votes
1answer
2k views

PC boots but screen is off. Need to reboot several times before video works again

I have this problem with my PC. First setup: Asus P5E Deluxe Motherboard (first BIOS, I've never update it) 4Gb DDR2 RAM Corsair XMS 2 (2x2Gb) MSI Ati Radeon 4850 Velociraptor 150Gb 10000 RPM ...
6
votes
2answers
2k views

How do I troubleshoot computer dumps?

Once I have a dump of a computer crash/freeze, what are some tools and steps to take in order to troubleshoot crash based off of the dump itself? I am looking for tools to isolate what processes or ...
6
votes
5answers
4k views

Xubuntu stuck after login

How can I debug an issue with Xubuntu 12.04 (fresh install) which just waits idle after a login for about 30 seconds? The login screen is delayed correctly. After login, I get my desktop background, ...
6
votes
2answers
5k views

Windows 7 x64 installation freezes on new PC build

Symptoms While attempting to install Windows 7 (64 bit) on my new PC build, it freezes usually at the point where it is expanding the windows image, but has frozen as early as accepting the licence ...
6
votes
3answers
1k views

Can I close a firefox tab through the console?

There I was downloading a bunch of stuff from the Internet quite happily using Firefox built-in download manager when I decided to check code academy (a site that teaches you how to program in ...
6
votes
1answer
3k views

How do I analyze excessive Windows kernel mode CPU usage?

My Windows XP machine recently started to semi freeze on me every odd reboot after a few minutes of usage (different programs / no additional prg start at all). Update: I have now managed to get a ...
6
votes
2answers
251 views

My Mac demands I sacrifice a program to it every 10 minutes or so. What should I do?

Several times today, my Mac (10.6 Snow Leopard) has frozen up. The cursor has become fixed (movable, but the cursor does not change), the screen unresponsive (nothing highlights when I roll over it, I ...
5
votes
3answers
4k views

Is it possible to prevent Windows 7 forcing the closure of an unresponsive program?

Windows 7 seems to be a bit overzealous in closing programs where it thinks the program has stopped responding. Some things just take a long long time, and I have the feeling that it should give ...
5
votes
5answers
47k views

Windows 7 running slowly with low CPU usage and memory

I have a relatively new (under 2 yrs old) Windows 7 machine. It has 9GB of RAM, and an i7 core CPU (930 @ 2.8GHz w/ 8 CPUs). After about 8 months since a clean install, I noticed my computer was ...
5
votes
5answers
12k views

How to fix USB mouse freeze in Ubuntu 10.04 or Fedora 13?

I'm just starting out using linux and so I installed Ubuntu to a hard disk. I noticed that after 30 minutes or so, the mouse pointer would simply stop moving while the keyboard was o.k. Exact same ...
5
votes
2answers
779 views

BSOD continuing after wiping hard drive and starting clean Windows 7 installation

I have had incessant BSODs with my Acer Aspire x1700, Intel Pentium Dual Core 2.4, initially running Win 7 x64. I have 8GB of RAM and I ran MEMTEST (8 passes) with no errors. I have replaced my ...
5
votes
2answers
2k views

What to do when machine fails a Prime95 stress test?

In an effort to diagnose the cause of random resets and freezes I have been running a series of stress tests on my two year old computer. Thus far the machine has passed nine hours of the Prime95 ...
5
votes
2answers
394 views

Sleep Freezes Laptop

My laptop freezes when it automatically goes to sleep (or hibernate) due to Control Panel's Power Options settings. I can not get the laptop to wakeup by pressing any keys including Control + Alt + ...
5
votes
3answers
7k views

Windows bug? Freeze while copying files. Parallel another copy may unfreeze

How to debug problems with simple copying files? I often have a problems when just copying many files from one disk to another. Probably the problem occurs only with ONE of hard drives, installed on ...
5
votes
4answers
847 views

Computer Freezes with “Bugcheck 0” on Windows 7. How do I figure out why?

After about 10 minutes of running, my computer will hang, exhibiting the following symptoms: Both monitors act as if there is no image being sent to them (on, but blacked out) The CAPS Lock key on ...
5
votes
3answers
2k views

New SSD: OS and VMware Workstation crash (stability SSD / Asus M4A78 Pro)

A machine is running Windows 7 x64 with several other systems running on VMware Workstation. I built the machine myself, using only quality parts and ran memtest86+ several times without error. ...
5
votes
1answer
1k views

Hardware interrupts and system unresponsiveness

Very occasionally, about once a week, my Windows Vista Business machine will completely lock up for anything between a minute and several minutes. Once this happens, it recurs more frequently until I ...
5
votes
2answers
2k views

VirtualBox freezes during runtime when running from Win7 but not from Linux

I have a virtual box disk on my NAS so I can use it from Windows as well as Linux. This works fine except on Windows (7) the VM sometimes freezes. The NAS (QNAP TS-109II) occasionally sends me an ...
5
votes
3answers
1k views

Hard drive freezes on MacBook Pro

The hard disk in my Mid-2009 MacBook Pro crashes intermittently. In Activity Monitor, the disk activity flatlines and no data is written or read for a period of time, usually between 15 seconds and ...
5
votes
2answers
2k views

XP Pro freezes on welcome screen

I have a problem that sounds much the same as http://superuser.com/questions/83101/how-to-diagnose-a-freeze-on-startup-in-windows-xp About every 2nd or 3rd boot, XP-Pro freezes on the Welcome page ...