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8 views

Black line across screen on Dell Latitude E6430

I have been using Dell Latitude E6420 with Ubuntu 14.04 LTS from 2 months. Everything was working fine. Suddenly, black line on top of screen came and not going back. I tried to to take screen shot of ...
2
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0answers
11 views

Diagnose MS Word's for bottleneck(s)

When merging two different Word documents I sometimes get really odd errors. Sometimes in the error message is stated, that a font is missing, sometimes - "insufficient RAM or disk space", sometimes - ...
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1answer
29 views

SMART Extended Self Test on a new Hard Disk

Is it normal that the SMART extended self test to run for hours on a new hard disk. So far, the test is running on my laptop for 2 hours. What is it doing? If I stop the test, will it damage the hard ...
1
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1answer
58 views

I'm in the US and computer only works when power supply is in 230V position. How do I diagnose this?

So, I replaced a computer PSU about six months ago. And, the computer power down intermittently. I've found: it's not over heating. Monitor shows it running cool. it's not graphics related. ...
2
votes
1answer
30 views

Testing hardware in computer that fails to POST

With a computer that powers on and runs its fan, but doesn't get any further, what would be useful troubleshooting steps and diagnostic equipment (if any)? It seems undamaged to look at, and the user ...
1
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1answer
32 views

What can cause PCIe graphics cards to randomly fail during boot?

I have a system that's currently driving me crazy, and I'm hoping someone out here on StackExchange will be able to point out something I'm doing wrong. The computer is home-built and consists of: ...
2
votes
2answers
55 views

How to get specific details on memory problems in Windows 7

Solution found below; will mark as answer when able Within the last week, I've been gettings some BSODs with a MEMORY_MANAGEMENT code. I ran the Windows Memory Diagnostic tool, and within a second of ...
9
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5answers
769 views

What ports are used by an application [duplicate]

I'm testing an application which opens its own ports (acts as a server for these ports, hence listens at that ports) and where the same application connects to ports bound by other applications (acts ...
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0answers
15 views

What diagnostics are available for a General Protection Fault from an old Windows program?

I have run an old (1996) Windows program that accesses DBF files. If I run with an old copy of the database it works fine. But if I run with my current copy of the database, I get the GP Fault when ...
1
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1answer
152 views

Intel server motherboard S1200V3RPS diagostic LED displays unlisted POST code

After some initial hiccups, I was able to get the Intel motherboard to at least power up. Now it does not start the boot process. I tried to understand the LED displays which explain problems ...
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votes
1answer
56 views

What to do with this defective hard drive, recognized by BIOS but not by OS?

I’m trying to recover a 2.5-inch Toshiba HDD drive from a laptop, which suddenly stopped working. When powered on, the disk was totally silent and thus not spinning anymore. Since it is out of ...
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votes
2answers
50 views

computer suddenly loses power: no event of the shutdown [closed]

I'm looking for some diagnostic advice. computer was assembled 2 years ago, no issues since. symptoms: computer randomly loses power (usually happens in 2's. IE computer suddenly loses power. I ...
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0answers
19 views

Why does my system show lots of memory being used when the total amount is way less than reported? [duplicate]

I don't know if the title makes sense but Windows reports 7GB of memory being used but when I check the task manager I don't anything close to this amount being used. Here is the pic where the apps ...
0
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0answers
19 views

Getting syntax error messages with NTDSUTIL switches

Does anyone know how to properly input the switches for this command? I am on one of my domain controllers: Start>Run>Ntdsutil Then I try activating the command with ac i & activate instance ntds ...
0
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0answers
15 views

What could be causing my laptop to lock up? [duplicate]

My laptop has a problem of locking programs randomly crashing. I ran a diagnostics test through my bios and a thorough memtest through my bios. I installed a clean version of Kubuntu on it recently, ...
0
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1answer
56 views

Smart disk error?

I performed disk tests with DLGDIAG and HDAT2 and none found bad sectors, but there is a !Smart error flag in HDAT2, What does this mean? Here's a screenshot.
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3answers
91 views

Poor performance with large .txt

Is there an inherent bug in the design of .txt that signficant performance drops can be experienced when working with relatively large files? Working with a file of over a million characters on ...
1
vote
1answer
56 views

Many BSODs - where to look for the explanation?

I have recently been getting a lot of blue screen of deaths with various errors (see this for a crash report created with the WhoCrashed software). The many MEMORY_MANAGEMENT errors made me think it ...
0
votes
1answer
36 views

Different results with Memtest86

I've recently run a Memtest on my computer which have 2 x 4gb DDR3 RAM sticks due to a lot of MEMORY_MANAGEMENT bsods. The result showed 4 errors in a run of 10,5 hours (8 passes) so clearly something ...
3
votes
1answer
126 views

Computer won't start unless power is removed for ~2 hours

About 6 months ago I built myself a desktop. A few weeks ago the computer started to act strange, for example it wouldn't always give a video signal when it came out of sleep. Now the issue has ...
6
votes
2answers
551 views

PC fails to boot after a knock to the top of its case

I accidentally knocked off a small block of fools' gold on-top of my computer case, but didn't actually hit anything inside (since the case was open), and now the computer is having serious stability ...
5
votes
2answers
821 views

99% CPU on Win8.1, Can't find offending process

For the last several weeks my laptop is running at 99% CPU, and have been unable to find the offending process. Task manager shows 99%, with no one process using all the CPU, it cycles between ...
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2answers
89 views

Diagnosing random, temporary computer “pauses”

My computer that I use every day has had the problem for over a year where periodically (between once and six times per day) it will become mostly unresponsive for a short period of time. This is ...
1
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2answers
314 views

How can I see how much my CPU is being throttled?

Windows has a feature which can be set from the Power Options menu where the CPU is automatically throttled according to usage in order to save power. How can I view this throttling in real time? For ...
0
votes
1answer
55 views

Windows 8 Hardware Diagnostics

I have a new high spec. Windows 8 Pro work station that has now BSOD three times in 5 days due to NTFS problems. Is there a tool I can leave running after work that try to determine the root cause of ...
2
votes
0answers
32 views

Best practise for debbuging hdd

I just logged onto my machine when suddenly ls gave me an Input/output error. After rebooting the machine /dev/sda1 could not be mounted. dmesg results in : [ 545.691453] EXT4-fs (sda): VFS: Can't ...
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0answers
26 views

What do voltages 5 through 7 correspond to?

In the screenshot below, what do voltages VIN5 - VIN7 correspond to? If it's different per system how can I find out what they measure for me?
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2answers
827 views

ASUS RT-N66U how to identify source of traffic spike

I have an ASUS RT-N66U as my home router. We are experiencing some traffic spikes in downloading over WiFi that slow all other activity to a crawl. Is there a way to identify the source (ip/host) of ...
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votes
1answer
96 views

Diagnosing Motherboard/CPU/ (most likely) GPU

OK, so I am trying to salvage my Mum's old PC for which she had bought a new power supply. After that it worked for a long time. After that time, it wouldn't boot (fans would come on very loud, power ...
0
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0answers
38 views

Windows 7 Bluecreen Diagnosis

I have been getting these bluescreens once or twice every month and I have no idea whats causing it. Is there anyone who can show me how to diagnose it?
1
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0answers
32 views

Diagnostic puzzle - laptop randomly fails at OS startup

I have a problem which has been bothering me for a year now and I would be grateful if somebody could help me. I will try to be as brief and concise as possible: Laptop: HP Probook 4525s, HDD 160GB, ...
0
votes
0answers
493 views

xbootmgr failing to run a trace, couldn't find a kernel logger

I am attempting to run a boot trace on a computer that is slow to log in using xbootmgr. It is a Windows 7 Professional computer that is on a domain. Based on the guide on this website: ...
1
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1answer
712 views

What HDD diagnostic tool to trust?

I recently purchased external HDD (Samsung M3 Portable External Drive 1TB). I run basic diagnostic tests with SeaTools for Windows and unfortunately Short DST and Short Generic tests fail. I then ...
0
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5answers
235 views

Easiest way for non-technical beta testers to gather system information of their PC?

I am starting beta testing on a new Windows application and since it does 3D rendering, system specification can be important especially as I am targeting business users; business laptops often have ...
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2answers
22k views

How to find out what is running on localhost port

I have something running at port 9090 on my local machine. It's probably something I set up long ago and forgot about... how can I find out what it is? I am using Windows 8.
1
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2answers
103 views

Dropped my netbook, how can I diagnose any issues caused

After I picked it up from the ground I heard what sounded like the HDD clicking, and then the operating system (Windows 7) started being very very sluggish. After a few minutes of closing programs ...
0
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1answer
3k views

Microsoft Sculpt keyboard malfunctioning (system conflict?)

I have Win7 x32 on my office desktop PC and recently I bought Microsoft Sculpt Ergonomic Desktop which consists of wireless mice, keyboard and numpad. The communication between these input devices is ...
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1answer
171 views

How to determine number of colours (bit per pixel) in X11

How can I see how many bits per pixel are actually available in a running X11 session?
1
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1answer
54 views

What piece of hardware has failed?

The other day I set some video files converting, around 15 minutes later I noticed that the PC had turned off and the 2 front LEDs were flashing. I turned the power off and restarted it (The GPU made ...
1
vote
4answers
639 views

What's a good test for a very non-geek to verify dropped packets?

TL;DR: Need a URL that can show a very non-technical, near technophobe, whether they have dropped packets. So me and some non-local relatives chat via Skype. While I was visiting, I swapped out their ...
0
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0answers
24 views

Test performance of a computer for maximum concurrent user allowance?

How can I test a pc to see how many concurrent users it can handle without performance issues? The users will be limited to 6 webpages or Tabs open and no audio/video streaming or downloading. Any ...
0
votes
2answers
169 views

What would cause a video card to show everything on the screen in one color (blue)?

I recently tried to upgrade to a better video card, and after putting it into my computer and installing the proper drivers, everything on my screen shows up blue... Not the blue screen of death, just ...
3
votes
1answer
466 views

How do I fix “hard freezing” issue when running games?

About 3 or 4 day's ago, while my roommate was playing a game on my computer that I had played plenty before, randomly hard froze. After rebooting and trying the game again, the same thing happened ...
-1
votes
1answer
28 views

Find a website at some geographical location

The http responses returned from my server are very slow. After testing a number of things out, I suspect some router along the way has implemented a firewall to inspect higher level protocol data, ...
-1
votes
1answer
1k views

Trace an Internet bottleneck

Access to my site is very slow. However, if I use an online tool that tests webpage performance, the performance is normal. This leads me to believe that somewhere between my computer and my server, ...
1
vote
0answers
206 views

ODX car diagnostic file editor

Is there any freeware/open source alternative to ODXStudio and VisualODX? I'm looking for software to create and edit ODX files (ECU diagnostics descriptions) for free. There are several freeware ...
1
vote
1answer
358 views

Ensure my Iomega NAS storage is working optimally

We have a NAS storage of 5.5 TB from Iomega which is around 96% full and around 3-4 yrs old. We have started doubting if the performance has degraded a lot of this NAS storage, e.g. IOPS. For example, ...
0
votes
2answers
223 views

Which network command does all the thing a windows restart would do?

Specification : 64 bit Windows, Core 2 Duo Network components used : Wifi - Intel 5100 AGN Datacard - NDIS based - Huawei 3g Issue when using Wifi : Every 15 minutes, internet connection gets ...
2
votes
4answers
193 views

Is my HDD on the verge of failing?

I have a 10 year old machine that I'm using as a small home theater server, and would like to know if the HDD is about to fail. I ran the following smartctl --all test and some of the error values ...
-1
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2answers
968 views

What is the process for diagnosing a ViewSonic Monitor? [closed]

I have a ViewSonic monitor that has been busted for quite some time. I've been researching it and i still have no clue as to why it doesn't work. It doesn't turn on. Or rather, it will turn on, but ...