Troubleshooting is a form of problem solving that uses logical, systematic steps to solve the problem.

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Q & A : Troubleshooting WLAN on motherboard [on hold]

I had a very rare problem. I wanted to configure my WLAN for a Wake on Wireless LAN, a setting I noticed in my BIOS in my old computer. Wake on LAN was enabled but I couldn't connect to my WLAN card ...
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1answer
29 views

Desktop computer rebooting after ~3 hours

My desktop computer, less than a year old, has started rebooting automatically (as if power was suddenly lost and immediately restored), after ~3 hours of running. After the first reboot in ~3 hours, ...
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51 views

Problems with webcam

My friend is using Windows 8.1, and he has a webcam. He says it is working very well even without installing drivers. Webcam is A4tech - PK-331F. I asked for this webcam for use. I plugged in the ...
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33 views

Troubleshooting Land Attack - Process monitor

I'm trying to find the real issue behind our Cisco ASA firewall log: Deny IP due to Land Attack from WAN_Web to WAN_Web. We're getting them every 5 or 10 min, so it will be nice to get rid of them. ...
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1answer
29 views

Constant loud high-pitched tone coming from computer

I have a video of the problem here. Please turn your volume down before 47 seconds into the video; the noise is quite loud (the volume in the video isn't even as loud as it sounds in real life from ...
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1answer
30 views

Keyboard lag & mouse selection issues

A few weeks ago I started experiencing typing lag which is 'somewhat' intermittent. It happens in all programs including browsers & Microsoft Word (though not as often). I also have experienced ...
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3answers
184 views

Why does my computer take an abnormally long time to shut down?

I am booting Windows 8.1 Professional 64-bit off an SSD (specifically, a 128GB ADATA SP900), and while it boots up incredibly fast, it also takes an obscenely long time to shut-down. The time to go ...
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21 views

Cannot import .ova

I'm trying to import an .ova file into my VirtualBox on Ubuntu 12.04 (64 bits), but when I do this I get the following error: Failed to import appliance /media/USB/Respaldo 11 (Armando)/SW/Maquinas ...
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16 views

PC requires multiple reboots to boot

For the past two years, ever since I upgraded my Motherboard, RAM, PSU, Hard Drive and Case, I've had to reboot multiple times in a row to make the PC recognise the hard drive and boot into windows. ...
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1answer
57 views

Can't access router's web interface

I had this problem for a while, however it only became really annoying recently as I needed to forward a few ports. My problem: I can't access the web interface of my router when typing 192.168.1.1 ...
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0answers
25 views

Except for the GPU, what can cause persistent graphical artifacts during boot?

I'm getting these graphical artifacts during boot, as early as the BIOS screen and during the Windows startup as well: The pattern seems to stay identical, and it is visible on every single boot. I ...
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4answers
4k views

What is the purpose of using a large ping packet?

While analyzing some traffic logs, I noticed a node pinging its gateway with a large ping packet size, ranging from 700 bytes to 1 MB. It's a constant ping from node to gateway and the size per ping ...
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0answers
61 views

Outlook 2013 updating inbox but no new items

I have Outlook 2013 with an Exchange account configured. Nothing has changed but suddenly I am getting the message "UPDATING Inbox (980 MB)" in the status bar. There is constant progress in the ...
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1answer
36 views

From Windows Server 2012 to Windows 8

Hi I formatted my laptop a month ago to test windows server 2012, now I want to format it again to back to its previous OS which is windows 8. I used a bootable flash drive(IMATION 8gb) containing the ...
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1answer
26 views

Can I delete .dylibs in usr/lib after uninstalling Homebrew?

I am in the process of uninstalling Homebrew from my Mac Lion 10.7.5. I see that there are 181 .dylibs in the Macintosh HD/usr/lib folder that has the same "date created" when I installed Homebrew. ...
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0answers
30 views

How can I disable the network troubleshooting in Windows 7?

We have a very specific network setup with static IP addresses setup on some Windows 7 machines in a localised network. We need to keep these IP addresses as is, but the windows network ...
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0answers
30 views

How to perform “tracert” like operation from browser?

I'm remotely investigating issue with my friend's WIN XP computer. The browsers (Chrome and IE) won't show any pages but message with err_connection_reset in details. I've tried to perform "telnet ...
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0answers
152 views

Can the wifi connection still be poor even if I have many bars?

On my Windows computer, the wifi indicator shows 4-5 bars out of 5 most of the time - I conclude that the signal is strong. My internet is occasionally very slow - between 1/5th and 1/100th ...
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0answers
36 views

Truecrypt Causing Other Applications to Crash

Has anyone experienced Truecrypt causing their applications to crash? Our org is moving to Win7/IE9/.NET 4.5.1...several computers run a webapp that has an IE plugin. Post-upgrade the IE plugin locks ...
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2answers
31 views

Computer not switching on swithed power button

My computer is not powering on when i push power button, I tried cleaning the power slot of motherboard and tried changing the SMPS (PSU) of the machine, Even then the computer is not powering on. But ...
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1answer
71 views

Sending file to computer via bluetooth results in “connection failed” error

This was working fine a weeks ago, but now when I try to send a file to my computer from my phone via bluetooth, it results in "Connection failed." I noticed that if I look in the GNOME Bluetooth ...
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1answer
55 views

Computer makes buzzing sound when windows are open

I am visiting my parents. I notice their screen makes a buzzing sound when a window is open. the tone changes when the window is reduced. The tone stops when i close the window. I am guessing, this is ...
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1answer
15 views

How to troubleshoot a program that does not start

I'm using Ubuntu Server 14.04 and I'm trying to execute a program, namely deluged. However, whenever I do so, whether in script or directly via the CLI, it never appears when I do ps -A | grep deluge. ...
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1answer
92 views

Is there any logic behind the fact that computer and devices NEVER fail when in front of an IT specialist? [closed]

How a joking/stupid question can throw some interesting info/tricks when troubleshooting computing (and devices) issues. I think there is really no need for explanation of this awkward problem, ...
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1answer
520 views

Why is my Focusrite Scarlett 2i4 no longer recognized?

Last night, after a year of continued and problem free use, I discovered that my computer no longer detects my Scarlett 2i4. My DAW (Ableton Live 9.1) says that no audio devices are detected and even ...
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1answer
36 views

Possible to “manually” search a running program's memory?

Would it be possible to manually search through a running/active program's memory (in Windows 7)? Windows just notified me that Firefox "has stopped working" and is asking me to close or debug. I had ...
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41 views

USD: unexpected, unexplained SLOW-DOWN

Sometimes, my laptop is providing me with very strange behavior. When i have several (10-20) tabs opened in Opera or Chrome, uTorrent running etc., nothing special, in such casual conditions happens ...
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1answer
41 views

Tick character (`) randomly added when typing

I have a microsoft wireless keyboard (wireless comfort keyboard 5000) and I'm running on Windows 7. Every once in a while, as I type, a random ` character gets added and I know it's not a typo as the ...
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1answer
30 views

Scarlett 8i6 Line In to Windows audio

Does anyone know if there's a way to take the line in from my Scarlett 8i6 sound card and pipe it to my windows audio? (In addition to using the usb connection and hearing it through my monitors) I ...
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1answer
39 views

Identifying whether the wireless router is faulty or the wireless adapter is

I have a persistent problem with my wireless internet connection. On the system (Windows 8.1) that I have, the internet is so unstable that it goes to limited every 15 minutes and then resolves itself ...
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2answers
3k views

Toshiba Satellite C55T-A5123 Refuses To Boot DVD or USB Windows 7 Install Disk

I'm trying to downgrade a Toshiba Satellite C55T-A5123 that came with Windows 8.1 on it to Windows 7 x64 bit. I'm stuck at not being able to get it to boot the installation media. I've turned off ...
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22 views

Computer Screen Showing Lines, not even hitting bootloader

Here is what the laptop looks like right after hitting the power button (only a second delay to get to this point). This is all it shows, and goes to nothing else. Laptop would not display on an ...
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2answers
142 views

Power supply or graphics card? [closed]

I have been having issues with my PC randomly shutting down and believe I have narrowed it down to two possible issues, either my PSU or my GPU. Back story: I got a newish computer (less than 1 year ...
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1answer
853 views

Why does my account keeps getting locked? What does the log Event 4648 means?

I have this problem I just cant seem to find the source. My AD account keeps getting locked. Using lockout status and looking at the netlogon log i figured out which PC it is. I know which process is ...
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2answers
442 views

Troubleshooting slow Wi-Fi performance writing to NAS

Setup: a Late 2007 MacBook Pro, running latest OS X 10.6, connects via Wi-Fi access point, ASUS WL-330gE to AFP share on NAS Synology DS508 running under latest DSM 4.0. When doing rsync from the ...
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65 views

Powering a HP BL680c Blade Server Without a Rack

I picked up an old HP BL680c from a computer surplus store and have no rack with which to power it. The board seems to indicate that it merely requires 12V in. When I try to run it off of regular 12V ...
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199 views

“No route to host” from my laptop while connected at home, while using SOCKS proxy or another computer work fine

This has been baffling me for some time. A single domain (haxe.org) is inaccessible from my laptop (OSX 10.7.5) while connected via my home network. Attempting to ping it results in "No route to host" ...
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2answers
69 views

How can I diagnose suspected NIC issues?

Over the past few days my ethernet-wired internet connection has started acting up. Here are some of the issues I've encountered: Websites are intermittently slow to load. Large downloads routinely ...
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1answer
159 views

Troubleshooting acute latency of Akamai CDN

Since yesterday I cannot load a number of web-sites which all seem to depend on Akamai CDNs. Not affected web-sites work fine, no problems with speed or anything. The web-sites I cannot load are: ...
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1answer
52 views

Three different time values when using traceroute [duplicate]

I'm learning networking troubleshooting and noticed how there are three different time values outputted for every hop when using traceroute, what do they mean? (The left CLI in the image is a router ...
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0answers
32 views

Hard drive not powering

I've got a SATA hard drive attached to a forensic write blocker (Tableau e35u), but the drive will not be recognized. This is because I can't power the write blocker when the drive is attached. The ...
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2answers
51 views

How to diagnose right-click menu slowness?

Is there a way to find specifically what's causing Windows 7 explorer slowness, like right-click menu delay and even opening new explorer windows/drives/folders? Slowness when opening new explorer ...
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1answer
25 views

computer turns on then goes in to standby

I have recently taken my graphics card, memory, card reader, cd and possibly my hard disk out the case. I have now put them back. But now when I turn the computer back on a fan spins (for a second ...
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3answers
552 views

How does a router detect a connected device ? (ENC28J60 module)

BACKGROUND: I am actually an Arduino beginner and learning to connect one to the internet via Ethernet. I'm not using the more commonly used (much easier) Ethernet shield (based on the Wiznet ...
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1answer
43 views

How can I prevent a container with bullet points overflowing a lower container in Onenote 2010?

I have some containers that are stacked vertically in a template. Each container has a heading. I tested the behaviour of the containers to ensure that they would move down as the preceding container ...
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50 views

Firefox stopped displaying Latex, how to troubleshoot?

My Firefox has mysteriously stopped displaying MathJax, such as the equations in MathOverflow. Instead, I see the raw Latex source (complete with $ signs). I tried launching it in Safe Mode but the ...
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105 views

Laptop Won't Recognize Touchpad

This is a weird situation. One day I found that my computer's touchpad no longer worked, so after some troubleshooting I reinstalled the drivers and all was right. However, as it turns out, the ...
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1answer
44 views

BIOS troubleshooting - how it become corrupted?

Recently I was repairing two computers: 8+ years old core 2 duo, and 1 year old core i3. Both had problems with booting. First one: no video output, no beeps, leds & fans on, second one: no video ...
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3answers
61 views

IE and Chrome not loading web pages

I have a laptop running Windows 7 x86 on our network where IE and Chrome are not loading websites. The internet is working fine with other services. Skype and Lync work, and I can ping web addresses ...
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2answers
391 views

Windows 8.1 Text Showing Up as Random Artifacts [duplicate]

I had this very random and very debilitating bug occur in Windows 8.1 today and wanted to document it so others can learn how to fix it and maybe someone knows how to prevent it that can provide some ...