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

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33 views

Why do my home made ethernet wires not work at gigabit speeds?

I've got a couple of gigabit switches which work perfectly when connected with a store bought ethernet wire, but when I connect an ethernet wire which I've attached the RJ45 plugs on manually it only ...
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21 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
21 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
26 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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1answer
119 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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17 views

Not getting email sent from Rackspace email customer

Our company uses Google Apps for email. We have a vender that I cannot receive email from when they send to my email address specifically (they can send to another account on my domain). Their email ...
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15 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
46 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
94 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
103 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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29 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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68 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
43 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
76 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
42 views

Three different time values when using traceroute

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
23 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
40 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
23 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
161 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
22 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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34 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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40 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
33 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
47 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
131 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 ...
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1answer
49 views

Why does computer hangs everyday?

My Linux computer hangs every day (sometimes twice a day). It also hangs my home network until the Ethernet cable is unplugged or I reset it. I can`t find any severe exceptions in log. This computer ...
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1answer
74 views

How do you determine what startup programs steal focus and start ephemeral consoles?

Context A startup program on my computer launches a short-lived cmd.exe on my desktop after logging in. The window steals focus and does not return it when it closes. It is too short-lived to read ...
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121 views

Windows 8.1 permanently at 100% memory usage

The system runs permanently on 100% memory, even after a clean boot. I thought I was having a memory leak. I have recorded pool activity with Windows Performance Recorder, dropped into Windows ...
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0answers
41 views

Windows 8.1 always loads to troubleshooting screen

I have a severe problem. When I turn on my Windows 8.1 PC it boots to a blue screen, with the title "Automatic Repair". It gives me two main options "Restart" and "Advanced options". If I click ...
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1answer
24 views

Graphics card probably shorted out

My motherboard: Asus P8B75-M LX I plugged in my speakers to the audio jack same connection as a earphone. When I plugged it in there was a buzzing noise coming out of the speakers. When I put the ...
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1answer
35 views

Firefox stops responding to mouse events after moving window

I've been dealing with this issue now for a few weeks and I've tried everything I can think of to resolve it, but nothing seems to work. Sometimes, when I open Firefox, and start moving the window ...
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15 views

BSOD MEMORY_MANAGEMENT

I'm getting a BSOD very frequently on my desktop computer. Is there any way to know what the problem is from the BSOD information? I found the information not really useful. I will try with some new ...
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3answers
279 views

Windows 7 freezes with high disk activity

I have a Windows 7 computer that I use almost exclusively for streaming video (Hulu in Internet Explorer, or recorded or live broadcast TV with Windows Media Center). Often the computer freezes for a ...
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66 views

Connection fails after one packet, server is unreachable by some clients while reachable by others

I am clueless about this issue. I have a machnine with Windows 2003 Server R2. From time to time the following issue arises: The server is accessible from certain clients From other clients (on the ...
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1answer
26 views

Tracing syscalls

I am trying to learn some tricks using "trace" (or dtrace or strace or truss), so I using the command: trace -d [random PID] I am getting the following error messages: trace error: trace facility ...
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1answer
47 views

PC 1 Long 2 Short Beeps, No BIOS

I just built a PC and it just makes 1 long and 2 short beeps. I'm pretty sure it's not the graphics card because it is working fine with all fans on and pcie ports work. I tried both ports for ...
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10 views

Mac self opens files and offers menus when not asked

I have a problem with mac 10.8.5, When working in any document or program, Mac itself: moves to another documents when doing in my current document ( do not use mouse ) or offers an options as in ...
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1answer
64 views

Pinging default gateway and DNS over ADSL connection failed

My ADSL modem lights are on. When I run diagnostics from my router's IP address it cannot ping the default gateway and DNS. I contacted my ISP ,they say that there is no problem on their end. What ...
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55 views

How can I find drivers or devices that cause DRIVER_POWER_STATE_FAILURE bsod in windows?

For some time now I have been experiencing temporary lockups and crashes on my brand-new windows 8 system. Investigation of error logs shows exclusively DRIVER_POWER_STATE_FAILURE errors; ntoskrnl.exe ...
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1answer
80 views

Belkin router SSID not visible

I have a Belkin N150 router and can't connect to the internet. Only the small blue WPS light is blinking. It's SSID is no longer visble to any devices. I can't even access it's router management page ...
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1answer
27 views

PC resets triggered by vibration

Having trouble with a PC that resets frequently (monitors turn black, then BIOS boot up screen appears a few seconds later). The cause appears to be vibration; in fact I can tap the case in a ...
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1answer
41 views

Linksys Ethernet switch holds five computers or not?

I have a Linksys Ethernet switch conected to the Internet. The switch works fine with two computers. My problem is when I try to connect another two computers, then nothing works. The switch has five ...
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2answers
81 views

Is my CPU performing as it should?

Recently my frames in a game I play have dropped significantly. I am trying to troubleshoot this and have got the the stage of the CPU, as you can see I have an Core i7 3770k, and although I know a ...
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1answer
25 views

Persistent issue with PC that won't boot

My PC refuses to boot. The power switch lights up and the fans spins, but it doesn't boot. Usually this happens for long stretches of time and then sometimes it magically boots after a few restarts, ...
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2answers
101 views

SATA1 hard drive not seen by BIOS anymore

I haven't had much success with storage at all because all my hard drive and USB drives have gone faulty and all on them on this very old PC except a few USB. Motherboard: ...
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1answer
121 views

Ubuntu runs very slow

I have been using Ubuntu 13.10 32-bit for a month. It's working fine, but since two days ago it hangs more than ever, and it sometimes runs very slowly. For example, when a window closes it slowly ...
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796 views

uTorrent 3.3.2 seeding status - peer connected but not uploading

I have installed new stable version of uTorrent 3.3.2 and have some weird issued by uploading to peers. Port is opened and forwarded (green check icon) same settings as in old 2.2.1 but users can't ...
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1answer
186 views

Monitor image became offset to the right. How to fix this?

Got this odd problem where the image in the monitor is offset to the right. It’s offset a lot. I have an external monitor, which is connected to a laptop. I don’t use the laptop’s display, only the ...
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0answers
121 views

Problems with Radeon HD 7770 graphics card

I got an Asrock 945GCM-S motherboard, LGA 775 socket, 4GB of RAM and a Core 2 Duo E7400 processor. And I wanted to upgrade my graphics card. The older graphics card was a Radeon HD 4650 without its ...
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2answers
45 views

Acer 5738, Windows 7 random shutdowns

I can run my computer any number of hours continuously without any issue, but if I do a Skype video call (not just audio, never happens with audio call), some flash games, or even certain online ...