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

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1answer
58 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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4answers
134 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
1k 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 ...
2
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1answer
71 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
361 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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0answers
204 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
75 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 ...
0
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1answer
32 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
325 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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2answers
5k 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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0answers
333 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 ...
0
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1answer
65 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
1k 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 ...
0
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1answer
474 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 ...
0
votes
1answer
36 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 ...
0
votes
1answer
89 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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votes
2answers
192 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 ...
0
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1answer
28 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
230 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
974 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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vote
1answer
1k 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 ...
3
votes
1answer
2k 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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2answers
83 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 ...
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0answers
572 views

New Build, asrock h87,-itx no video output

Im building a system with a asrock h87m-itx, 8gb gskill ddr3 1600, and a intel g3220 lga 1150 i put it together and it powers up but there is no video output. I tried hdmi and dvi. ive also checked ...
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vote
1answer
716 views

Computer freezes on cold boot

I have a problem which started about 3 weeks ago. Each time I boot my computer for the first time of the day, it will freeze around 1 hour after the boot. It happens independently of the OS in use ...
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1answer
231 views

Diagnosing random computer crashes

I have been attempting to diagnose random computer crashes for a few days, and have been unsuccessful so far. I had a desktop that I build a year and a half ago which I ran Linux on. I never had ...
7
votes
1answer
709 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 ...
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1answer
9k views

Windows 7 and 8.0 bug: Network icon is marked as “no internet access”

When does windows mark network connection icon as having no internet access? I have internet access, but the icon says I don't. If I run troubleshooter, it finds no any problems. But the icon still ...
0
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1answer
121 views

Creating a sub-network on a different network

I am on a network and am assigned 1 IP address for me. This is 172.16.1.202. However, I wanted to have multiple machines on at one time, so I created a router using a Raspberry Pi. It is running ...
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1answer
73 views

Why is only one Excel spreadsheet crippled, but others are fine?

I have an inherited spreadsheet that I really don't want to rebuild at the moment. It's a simple small workbook that is small (< 200 rows that don't even reach to AA) and does nothing more than ...
0
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1answer
97 views

Intel RST accidentally selected wrong drive as system drive — how to fix?

Question / TL;DR If Intel RST has marked a drive other than my RAID set as the system drive, how can I get it so that the RAID set is now seen as the system drive, and catch it up to my drive now? ...
0
votes
1answer
107 views

How can I troubleshoot SSD disconnection problems on Windows 7?

I have a small SSD (Transcend StoreJet TS256GESD200K) which I am using on several computers. The drive is formatted with NTFS and recently I started noticing disconnects. Normally one probably ...
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0answers
60 views

mouse, keyboard or monitor randomly not working on 5% of win 7 boots

Sometimes (e.g 5%) I boot the computer and either the mouse (usb), or the keyboard (usb), or the monitor (dvi) will not work although the devices are powered. Nothing different is been done while ...
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4answers
717 views

Why do people suggest you try using another USB port? [duplicate]

Just curious why this is always on the list for trouble shooting USB devices. Is it just because how USB works, some kind of tech myth, or just in case there's an actual hardware fault with the USB ...
0
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1answer
48 views

Screen stops responding in full screen applications

Hi I am encountering a strange problem any ideas would be helpful. I am trying to run certain games in full screen whilst doing so my screen goes blank and get the no data received message. This ...
3
votes
1answer
1k views

Diagnosing Random Computer Freezes [duplicate]

I bought a desktop computer a few months back. About 3 months ago it started freezing at random intervals, sometimes as much as 2-3 times per day, other times as little as once per week. The specs are ...
0
votes
1answer
1k views

Sound stopped working on Toshiba Satelite C855

I have a Toshiba Satallite C855 running Windows 7 with a Realtek High Definition Audio card. Sound worked fine yesterday. Today, my two-year old did something to the machine, and I have no sound. I ...
0
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1answer
33 views

Obtaining IP Address Cycles - Wireless Connection Failing Troubleshooting

We are trying to connect wirelessly to our business' network through our router (BT Business Hub). It was working a week or two ago and as far as I am aware nothing has changed. Anything trying to ...
1
vote
2answers
403 views

How to find last-added USB device in Windows?

Is there a way to find the last-added USB device in Windows (perhaps something like "dmesg" for Windows)? I'm plugging the USB device in, and it makes the sound of connection, but when I check ...
0
votes
1answer
459 views

Window Remote Desktop Connection

I have PCs X1,X2,X3 in a network X (Ethernet Lan) all of them in workgroup XW and running windows XP pro 32 bits version. The same PC X1 is also in network Z (wifi Lan) with another PC Z1 via a ...
0
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0answers
408 views

Boot loop before POST

I built a new computer two months ago: Motherboard: ASUS H87-Pro Processor: i5-4570 Memory: Vengeance LP - 2x 4 Go - PC12800 - 1600 MHz - CL9 - CML8GX3M2A1600C9 in slots A2 and B2. Case: Advance ...
0
votes
0answers
40 views

First build, circuit breaker problems

This is my first build, so please excuse the fact that I don't know the correct terminology. I just built my first computer last weekend. Essentially I got everything installed last Friday, and ...
0
votes
1answer
932 views

Windows 7 with static IP | Suddenly stop working Internet connection

I have a Windows 7 installation and because I run an Apache web server with Virtual Hosts, I have assign a static IP in my network interface. The given IP is 192.168.1.100. Suddenly, today, my ...
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0answers
147 views

Lenovo G570 restarts randomly

My Lenovo G570 began to randomly restart once or twice a day about two weeks ago. It stopped for a few days and then started doing it again. I don't get a BSoD, it just restarts and gives me the ...
0
votes
1answer
1k views

Manually connecting to a wired network with linux

I currently only have wired internet via a cable modem connected to an Airlink 101 ASW105 switch. It works fine for my wife's mac. However, my laptop does not connect; I've tried connecting via eth0 ...
2
votes
1answer
1k views

Is Comcast blocking my SSH on a high port?

I am having trouble getting SSH to work. I am using a non-standard port (9876). I verified my server's IP address both by using an external whatismyip type site, and by using curl ifconfig.me, both ...
0
votes
1answer
184 views

Superblock set in the future, hwclock attempting to debug it

I keep getting errors messages about my Superblock mount time being in the future, and insisting on doing fsck on every other boot, Im worried it will mess up my SSD. Where is the last time coming ...
2
votes
1answer
218 views

Some service is bringing Windows 7 to a halt - how do I find it?

Something is preventing Windows 7 Home Premium from completing some basic tasks. I can't open the Networking and Sharing center, and the network icon in the system tray is frozen with the blue ...
0
votes
1answer
278 views

Fixing truncated *zip with Terminal, keep getting stuck

I have a *zip containing a lot of pictures from the past year, and it compressed incorrectly and is missing its end statement. I've been using "zip -FF" in Terminal, but it keeps getting stuck on a ...
1
vote
1answer
99 views

lock browser to troubleshoot javascript and css

Let's say I created some tooltip which displays a popup when the cursor is placed over a given part of the page, and removes it when I move the mouse. For an example, see http://jsbin.com/aCoboQo/1 ...