Thursday, February 26, 2009

Printing (or not) from Mac's to PC's

Yesterday I had a customer whose daughter had an older iMac who wanted to print over the network to a printer hooked to a PC.

The PC was an older Dell and the printer was an older Dell All-In-One. Dell printers are made by Lexmark, the printer software is made by Lexmark, but the printer drivers are written by Dell.
(Drivers are small pieces of software that tell a piece of hardware how to operate; in this case how to print a document.)

It turns out that the Dell AIO did not have Macintosh drivers. The Mac could see the PC (who was acting as a print server), could send the print job to the PC, the printer would say "printing" and yet nothing happened.

The moral of the story: make sure your PC's printer has Mac drivers available.

Monday, February 23, 2009

More on the fake Anti-virus front

I've talked before about fake anti-virus and anti-spyware programs. Normally you can write down the name of the suspicious program and Google it or go to respected review sites for answers.

Now, maybe not.

The newest fake anti-virus, Antivirus-1 or AntiVirus2010, will change the listing of known good websites contained in your browser(this is called the hosts file), and if you try to go to a well-known website like PC magazine, ZD Net, etc. the fake antivirus will re-direct your browser to a fake site controlled by the virus' author, where it will show glowing, wonderful reviews about the fake anti-virus program.

The best way to avoid this is to have a good anti-virus program running and updated. Also, it is good to be suspicious of any program you dont remember installing.

Monday, February 16, 2009

New Security Threats

It seems like there are always more threats to look out for. Today, some new ones you might not have heard of.

Variations on 'phishing': Voicemail and Twitter.
Voicemail Phishing ("vishing"): A voicemail call (sometimes called a 'robo-call') from your bank or a company you've recently done business with telling you that a large transaction, usually something you havent done, has been held up.
The call includes a tol free number tha tyou are asked to call right away to fix the problem. Once you do, a voice menu prompts you to key in your credit card number, as well as the expiration date and 3-digit security code on the back. After which, the caller is usually hung up on, or placed on terminal hold.

Twitter Phishing ("twishing"): A fake tweet (blog posts on Twitter are called 'tweets') is sent to your account with a link that supposedly sends you somewhere harmless, such as youtube or Flickr, but really sends you to a fake login page where you are asked to give up all of your info.

Wednesday, February 11, 2009

Power Leeches

PC World had an article recently about electronic gadget and how much power they consume even when turned off, or even when just the charger is plugged in but not charging anything.

It appears that the answer to "should I turn my computer off at night?" is "only if you want to save money on your power bill." The tower itself consumes about $7 dollars a month if you leave it on 24/7. Your entire computer setup (tower, monitor, speakers, etc) can cost you as much as $60 month; even in 'power-save' mode.

Thursday, February 05, 2009

Un-dunking your cell phone

If you've ever dunked, washed, or otherwise immersed your phone in water, you feel like you've lost everything. But what if you could undo the dunking?

Take your freshly dunked phone, get a cooking pot or deep bowl, fill it full of uncooked rice. Submerge the phone in the rice and leave it there for a few hours or overnight.
Afterward, it should work as normal.

It needs to be noted, however, that this is not guaranteed to work; but it should.

And now, a couple of things that you should definitely not do with a wet phone:
  • Use a hair dryer to dry it off. The heat can damage components.
  • Put it in the microwave. The metal will spark and internal components can short out, so even if they were to dry, they would be fried.
  • Leaving it out to air dry. This would work with a CRT monitor, but not with a phone; the water would have no where to go, and could continue damaging internal components.
Also, this is intended to work with water or water-based liquids (like coffee), not with syrup based liquids like soda (the water leaves, leaving the sticky syrup behind).

Blue Screen Errors

Sometimes fixing similar Blue Screen of Death(BSoD) error messages isnt as easy as it seems.

When you have an IRQ_NOT_LESS_OR_EQUAL error, the first thing you do is swap out the RAM; but when you add DRIVER_IRQL to the error message, it becomes much harder.
You might think, as I did, swap out the RAM first. That doesnt work. You might also think that there is a driver issue, after all, the error message says 'driver' in it.
Ok, but which driver? In my case, it was a video problem. Changing the video driver didnt help.

Now, you might be thinking, Google for the answer. I did; at least 4 different answers, including Microsoft's. All of them suggested something besides the RAM and the video drivers; so I tried them all (Microsoft's answer was to change the video drivers).

After everything was tried, I used System Restore and went back further than the time the problem had occurred. I got the rid of the video problem, but the Blue Screen remained.

If you know a definitive answer, I'd love to hear it.