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Home→Published 2011 → May

Monthly Archives: May 2011

Epson TX810FW lost WiFi

Computer Aid Posted on 30 May, 2011 by Luigi Martin30 May, 2011

An Epson TX810FW is connected to the rest of a network using WiFi, and its been working well for a while.

But suddenly, it stops printing.

I take a look, thinking its just lost its IP address, or it cannot find a DHCP server.

Sure enough, its configured to use DHCP, and often, if the DHCP server gives it a new IP address, then suddenly, nobody can print to it.

So I decide to work around this by using a fixed IP address.

But it doesn’t work, as I’m now having problems getting the printer to recognise the WiFi router… The printer has a ping diagnostic, but that fails.

It could be something peculiar with the WiFi encryption (although its been a while since I’ve seen devices that cannot cope with standard encryption protocols.

Just to be sure, I change the WiFi router to have no encryption… but the printer still cannot connect via WiFi.

OK, at this stage there are 2 possible options:

  • The Wifi Circuitry in the printer has failed.
  • The whole network circuitry in the printer has failed.

So I connect the printer using an ethernet cable to the router, and after some configuration, the printer works just like before (but this time with wires).

So once again, I’ve seen WiFi circuitry fail

 

Posted in Technical | Tagged TX810FW, wifi

android usb tether driver for Windows XP

Computer Aid Posted on 27 May, 2011 by Luigi Martin27 May, 2011

Having recently gotten an Android mobile phone (and since I have a mobile phone plan with 1Gb of downloads), I decided that I might need to occasionally use the phone as a broadband modem (although a wifi “wireless” tether is nice, its also nice to charge my battery-hungry Desire while surfing the net via my laptop).

The laptop is XP, so I thought it should be easy to setup… but XP just didn’t seem to recognise the phone.

I can connect it to my linux-based (easy peasy) laptop, with no issues.

Even Windows 7 worked nicely.

So whats the problem with XP?

It turns out that XP doesn’t know how to handle the “USB” internet without proper drivers (which microsoft seem to be refusing to make available via its update system… how childish).

So I eventually found the solution in an android forum:

  • First, download the driver file: android tether xp
  • Make sure you save someplace (like your desktop)
  • Plug your android phone to the PC via a USB cable
  • When the phone prompts you for the connection type (or by flicking down from the top bar of the phone), select: usb tethering
  • When XP says: “i don’t have a driver for this”… just say you will select the driver maually, and then point it at the “tetherxp.inf” file that you downloaded.
  • After that, you will have a tethered android internet connection (just remember that it can sometimes take up to 1 minute before XP realises that the phone has changed USB connection type.
Posted in android, Technical | Tagged android, tether, usb, xp

xp repair install, light blue screen, and only mouse pointer works

Computer Aid Posted on 23 May, 2011 by Luigi Martin23 May, 2011

After getting a corrupted PC, I found myself needing to do a repair install of windows XP.

Everything proceeded normally, but after the final reboot, I get the normal XP logo with a rolling bar at the bottom, and then a light blue screen, and then nothing.

After a minute, I move the mouse pointer, and it works normally.

I then try Ctrl-ALt-Del, but nothing happens.

Next, I try starting in safe mode, and that works.

I soon find that windows wants to activate, so I start XP in safe mode (with networking), in the hopes I can then activate in, and then start windows normally.

Alas, XP refuses to activate in any for of safe mode… only normal mode will do.

But I do find that that I can disable the automatic activation, which then lets me boot normally, after which I just need to re-enter the windows product key, and then (at long last), activate the stubborn XP system.

Details:

  • Start in Safe mode
  • Run regedit
  • navigate to: HKLM -> software -> microsoft -> windows nt -> currentVersion -> WPAEvents
  • Now change the oobetimer entry by 1 digit (eg change the last hex key from fd to ab)
  • Once you commit the change to the registry, close regedit, and restart the PC

You can now re-enter the product key and activate normally

Posted in Technical | Tagged light blue screen, mouse works

xp security center says automatic updates not enabled (yet they are)

Computer Aid Posted on 20 May, 2011 by Luigi Martin20 May, 2011

After removing yet another “typical” fake antivirus, I notice that the XP security center says that automatic updates are not enabled.

It sounds simple enough to fix: just go into control panel -> system -> automatic updates -> and then make sure they are set to automatic.

Once I did that, Security Center is still reporting that automatic updates are not enabled.

Restarting the PC should fix that…

Uh… no.

Strangely, Security Center is still reporting that automatic updates are not enabled… yet the settings in control panel are actually set to automatic… how strange.

But it doesn’t take me long to find the solution:

Start -> Run -> cmd

At the black command window, enter the following (waiting for each line to complete):

regsvr32 wuapi.dll
regsvr32 wuaueng.dll
regsvr32 atl.dll
regsvr32 wucltui.dll
regsvr32 wups.dll

I then restart the PC, just to be sure everything is working correctly.

Posted in Technical | Tagged automatic updates, security center, xp

ie8 won’t run and triggers DEP (sweetIM problem)

Computer Aid Posted on 16 May, 2011 by Luigi Martin16 May, 2011

A windows XP system suddenly stopped running ie8.

I tried chrome, and that worked normally.

IE8 would just display an error about DEP (Data Execution Prevention), and then shut down.

I tried disabling the IE8 DEP system, but then I’d get a generic ie8 error.

running ie8 in its “no add-on” mode also didn’t help.

I went into internet options and reset it back to “factory defaults”, but still no go.

I disabled known bad add-ons like the alot toolbar, but still no go.
I eventually started uninstalling the disabled add-ons (eg alot), but nothing would get ie8 to work normally.

At this stage, I was stumped, but I decided to browse through the XP add/remove programs list, and started to remove applications that were not being used.

I uninstalled a lot of junk, but I eventually found that uninstalling sweetIM fixed the problem with IE8

I find this unusual, as sweetIM wasn’t part of the IE addons, yet it must be using IE “under the covers”… so once it corrupted something, then IE stopped working.

Posted in Technical | Tagged dep, ie8, sweetIM

A Guide to Speeding up Your Internet Connection

Computer Aid Posted on 13 May, 2011 by be13 May, 2011

Disappointing internet speed is a common experience for the new internet user, and it generally occurs because the default setup is not the optimal one for their particular configuration. The good news is that maximizing the connection is typically a simple matter of a little investigation and some minor tweaking. In most cases, you’ll be able to achieve much closer to advertised speeds, and since they’re very occasionally conservative, you may even surpass them.
The first step is to determine what the maximum speed of your connection is. Call the service provider if needs be. It’s also important to note that there may be factors in play that limit your potential. For instance, if using a telephone-based internet service, distance from the source will limit speeds. Once you’ve determined what your theoretical maximum is, run a internet speed test. From here, you’ll understand how serious the problem is.

If the service is running far below potential, then consider possible physical and external causes. Talk to the provider, and explain your problem. Examine all connections, and check lines for damage. If you’re using extension cables, test the connection without them. These can cause signal degradation, and you may need the service provider to set up the network in a way that it doesn’t need those extensions.

You may also want to try an iPlate, such as the one manufactured by BT. The iPlate essentially removes the bell wire needed to ring older systems. The bell wire is obsolete now, but it’s still part of the system, and it often serves as a conductor for electrical interference. If this is occurring in your home, the effect on your broadband speeds can be substantial. Users experience speed increases as high as 70-percent, and iPlates typically only cost several pounds.

Verify that the router is working properly, and you can do this by testing the internal network. If you’re experiencing similar slowdowns internally, then you may have a router problem. If it’s a wireless router, ensure that it is password protected, and then double-check that you have it configured correctly. Make sure that a program isn’t crashing the router with too many connections. Torrent apps are likely culprits. If it’s a low-quality router, replace it.

Buying a new router may seem like a drastic measure, but router technology has come a long way over the last several years. It may be that your setup requires some fine-tuning of the router. The new routers are much “smarter” in that they can often auto-detect the environment, and then tweak themselves. If you buy the router from a store with a return policy, you can always return it if the router wasn’t the source of your problem.

When it comes to an operating system like Windows, it can be difficult to tell if it or one of the programs running on it is the cause of the problem. You can check the browser by installing a new browser. For instance, if you use IE, install Firefox or Chrome. If that doesn’t do it, you may want to test the connection on a clean install of Windows. If a clean install is not an option, try it in safe mode with networking, or borrow a friend’s laptop to test it.

If you’re still experiencing problems at this point, it’s vital that you perform a clean install of your OS, and that you move the computer, router and modem as close to the faceplate as possible using lines that are only as long as is absolutely necessary. If in this configuration you still experience the slow speeds, then this is most certainly the service provider’s problem. Have them come back out and check the system from the faceplate to the road.

 

Article was written by Spencer Hogg of Broadband Expert.

Posted in Tutorial

disable freecause search in Firefox

Computer Aid Posted on 9 May, 2011 by Luigi Martin9 May, 2011

For a while now, I’ve noticed that if I type a serch term into the firefox address bar, I get search results via something called freecause.

Since I prefer Google, I decided to find out how to change the default address bar search.

It turned out to be quite simple:

in the Firefox address bar, type:

  • about:config
  • click the button that says: I’ll be careful, I promise
  • in the filter box, type: keyword.URL
  • double-click on keyword.URL (unter the Preference title)
  • In the box that pops up, erase the existing text and then enter: http://www.google.com/search?q=
  • click OK
  • optional: close the about:config tab and restart firefox

 

Posted in Technical, Tutorial | Tagged firefox, freecause

Could telepresence be coming to a home near you?

Computer Aid Posted on 6 May, 2011 by be6 May, 2011

Video calling over the internet is being used with increasing frequency over the internet, but the technology being used to make these calls is a long way behind that which can be found in the business world.  Could new innovations in this field be about to not only substantially increase the quality of video calls, but also change the way we make phone calls forever?

Since the early 1980’s making video calls from the home was possible, possible but not practical.  The costs were high and the video quality was terrible.  Needless to say the technology didn’t catch on.  However things are different now, the explosion of the internet and ever increasing internet speeds has made it possible to actually transmit high quality video without so many reliability problems.  More and more people are buying webcams and using Skype to cheaply video chat with far away friends and relatives.

If the advances in video chat in the home over the last 30 years have amazed you, then a look at the business world will show you that this is only the tip of the iceberg.  Video conference facilities have been advancing in the business world since the 1980s, much of what you have on your home computer got its start in companies that had offices all over the world which they needed to communicate with.  Over the last five years however these developments have really been accelerated, the recent economic instability has meant that companies have become more reluctant to send their executives jetting off all over the world for meetings, but instead been looking at comparatively cheaper options, such as video conferencing.  The extra money and competition this has created in the industry has led to many exciting new innovations.  In attempts to best there competitors manufactures have developed higher and higher resolutions of video and found ways to send these high resolutions reliably through slower internet connections.  Some companies have even developed ways of sending full body projections of absent meeting attendees into the meeting.  These new advances have led to video conferencing equipment being redubbed telepresence.

As with all technologies, it only takes time for price and complexities to decrease, and this is now beginning to happen with telepresence.  Many manufacturers are now beginning to produce large screen high definition televisions which incorporate telepresence hardware.  Telepresence hardware designed to work not only on the ultra-high speed internet connections found in corporate offices but also on the regular broadband connections most homes have.

So is this going to change the way you make phone calls?  This new technology is crushing the barriers that detoured a lot of users.  Video calling could become as simple as turning on your television and instantly produce quality that can really come close to making you feel like your friends and family are with you.  Putting the technology in a television also means the the technology is now at the centre of your home where you would normally entertain guests.  This could really be the change that makes video calling and realistic replacement for the telephone.

This technology is still priced a little too high for most home users and is currently aimed at businesses who wish to encourage teleworking and telecommuting, however if it is successful in this industry it will only be a matter of time until prices of telepresence devices fall to a level where they could be considered a house hold item.

And when it does think at the changes it could potentially make to society.  Who knows maybe one day it’ll be at the stage where I choose which takeaway I want to order via telepresence and then enjoy eating dinner with my friends over seas with out ever leaving home.

Posted in Technical | Tagged home, telepresence

more problems with windows 7 and sound

Computer Aid Posted on 2 May, 2011 by Luigi Martin2 May, 2011

I sold a new PC to someone… and in the first few weeks, it had many problems, which were eventually traced back to some faulty RAM.

Well, about 8 months later, I need to revisit this PC, as sound isn’t working.

I look at all the control panel settings for sound, and it looks like windows 7 is no longer detecting the sound chip…

Its possible for the sound circuitry to fail, but unlikely, particularly on a good Intel motherboard (DG41RQ).

Anyway, rather than waste too much time, I decide to just plug in a new sound card, which worked perfectly.

I’m hoping this is the last I hear of this system, as it has caused me many wasted hours tracking down various problems associated with faulty RAM

Posted in Technical | Tagged dg41rq, ram, sound, windows 7

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