Archive for the ‘PC Dr.'s Blog’ Category

Recent Activity & Thanksgivings

Monday, November 30th, 2009

Over the last week or two, I’ve provided two customers and both of my brothers with Windows 7 Home Premium.  My parents’ copy will be arriving today.  I had a few appointments, one involving a vague Internet problem that turned out to be a failing wireless adapter, and another regarding a slow desktop PC in desperate need of an upgrade.  My grandmother was sent to the hospital Wednesday, where she stayed until Saturday afternoon due to dehydration.  She is doing much better now. 

The four installs of Windows 7 gave me an opportunity to learn something new. Windows 7 comes as a DVD disc.  Two of the systems that received Windows 7 were using Intel Pentium 4 socket 478 processors.  The motherboards were from different manufacturers but produced around the same time about four or five years ago.  However, whenever I tried to boot to the DVD disc, I would receive a CD error.  After swapping in and out several test DVD drives, and successfully booting from a Windows XP CD disc, I came to the realization that booting to DVD isn’t supported on older systems. 

In these cases, the best solution that I’ve found is to use Windows XP Home, Professional, and early versions of Media Center Edition (since they’re available on CD) as the launch pad for the installation. After installation, a clean (unformatted) installation can complete successfully.  I suspect that the problem also affects Vista DVD discs, but since very few people upgraded to Vista, I never encountered this short-coming.

The appointments that I had since my last blog involved a notebook PC with a vague Internet problem and a desktop in need of a memory upgrade.  I brought the notebook home after backing up customer data onsite to the customer’s external hard drive.  After connecting it to my KVM and wired network, I proceeded to check the system out for the usual causes of Internet issues.  After cleaning up and configuring the system for optimal performance, I returned the system to the customer.  I connected to their network and browsed a few pages.  The pages loaded quickly. A couple of hours later, I received a call that the system was unable to connect to their wireless network.  I returned and reexamined the patient in regard to its wireless connectivity.  I examined their wireless network environment and ultimately, came to the realization that the notebook’s wireless adapter was beginning to fail.  They wanted to obtain the needed component themselves, I recommended a replacement. 

For the desktop customer, I gave the machine a full work up and removed several pieces of malware, optimized settings for performance, and ordered 2 GB of RAM and a Linksys Wireless PCI adapter for the system.  The parts arrive today.  When I return the system tomorrow, I will examine their network environment and optimize it for best performance, including relocating their wireless router to a more central location.  I’ll let you know how it turns out.

Finally, my grandmother was sent to the hospital over Thanksgiving with dehydration.  She went to the ER on Wednesday.  They ran tests and immediately began to give her fluids.  She began to improve immediately.  There had been talk that she would be coming home, however, her doctors wanted to keep her in the hospital under observation.  On Saturday, she came home.  Last night we had our delayed Thanksgiving dinner, thankful that my grandmother was home where she belonged.

A Desktop, A Notebook, and my PC were in the shop today

Thursday, November 19th, 2009

It started last night around midnight.  My personal computer started running in slow motion after a reboot. I knew what it was.  After all, it wasn’t the first time its happened.  The last time it took most of the day to work out.  To say the least, it was not a good time for it to happen, because I had work to do.  I was working on two other computers a fresh install of a Windows XP onto a Windows ME era notebook with only 188MB of RAM (yikes) and an upgrade to Windows 7 from XP on a desktop PC.  My computer would have to wait.

The Notebook needed RAM and permission for it came that afternoon.  RAM wouldn’t arrive until tomorrow morning.  The owners were leaving town and wouldn’t be back until Tuesday.  The notebook tested my patience in that it took two days of periodic monitoring to install Windows XP SP1a and fully update it to SP3.  Windows XP SP1 only needed 128MB of RAM to run, but SP3 needs more than 256 MB.  So, as you can imagine, the system ran painfully slow.  The system was to be used for basic web browsing, music, DVD and Video playback.  I configured the system  with the software required to meet their needs and provided security protection to ensure a safe Internet experience. Once the memory arrives, the system will be ready to go.  I may choose to install additional software such as a word processor or photo editor, depending on how the RAM improves the system.

The desktop, on the other hand, defied logic. I had already backed up the customer’s data and installed 2GB of DDR333 RAM, the system’s maximum, and a 256 MB AGP video card.  However, when I attempted to install Windows 7, the system refused to boot up from the DVD.  I booted back into Windows, and started the installation from Windows.  The installation completed successfully, but during the first boot the system crashed. Every attempt to boot to the DVD, where repair utilities would help me get the system operational again, failed.  I spent several hours swapping DVD drives in and out of the system, cleaning them, and trying to get the Windows 7 DVD to boot.  I wasn’t going anywhere with Windows 7, so I pulled out a Windows XP Home disc and it booted up immediately.  I performed chkdsk on the system, but it didn’t resolve the problem preventing Windows 7 from installing.  I booted up again and dumped the entire volume.  I reinstalled Windows XP and upgraded to Windows 7 from there. The installation was good.  I suspect that various aspects of the system were damaged, corrupt, or infected with something that prevented Windows 7 from booting up normally, after the system was wiped clean, did the installation complete successfully. 

The DVD issue, I suspect was a result of an older motherboard that didn’t support the boot to DVD option, since a Windows XP CD was able to boot every time it was tried.  After that, the installation went very smoothly. I provided security, Internet, and productivity software.  Then, I installed all of the software the customer provided to me except the printer, since the hardware is required for installation.  I updated Windows and restored the data I had backed up. Finally, I optimized system performance.  The system is now ready to deliver first thing tomorrow morning.

Once that was finished, I turned my attention to my own PC.  After uninstalling my video driver software and restarting the system several times, the proper video driver was installed.  The system began to run better.  I continued on with my work when it happened again.  I had been using Office 2010 each time, I experienced the problem today.  I will be reporting this bug to Microsoft with the hopes of making Office 2010 a better product.

Scammers Try To Use You To Ship Stolen Goods

Monday, November 16th, 2009

Internet scammers want to use you to ship items that they have purchased with stolen identities and credit cards to them.  These criminals are recruiting US citizens to ship their stolen goods to addresses in Russia or Belarus.  Apparently, they will ship electronics to people like you or me, have us repack the items into plain packaging to avoid custom issues, and ship to their addresses.  When they receive the items, they will resell them at exorbitant prices, since Americans get their electronics on the cheap compared to other parts of the world. 

A friend of mine was approached by email by an individual looking to solicit their services.  She was looking for a way to supplement her income during these hard economic times.  They promised her a hundred dollars plus the shipping and handling costs to ship their purchases to them.  It sounded too good to be true, and as it turns out now, it was.  It was a good thing, UPS and FedEx don’t deliver to P.O. Boxes.

Koobface Expands Its Horizons

Saturday, November 14th, 2009

Recently, I wrote about the Koobface worm that is currently running amok on Facebook.  It appears that this pesky little bug isn’t isolating itself to Facebook.  Koobface is now attacking Twitter user accounts to send spam.  The worm is using session cookies on infected computers to impersonate users in order to send its spam messages.

According to security researcher Chris Shiflett, this new variation of the Koobface worm is proving to be difficult to isolate, since it is polymorphic, able to change its appearance to avoid detection, and able to delete itself after delivering its payload.  Currently, its payload consists of spreading itself to new machines and sending spam messages.  Some of the messages are for a premium SMS trivia service with a setup charge of $4.99 and a reoccurring monthly charge of $10. 

Financial gain appears to be the primary motivation behind Koobface’s recent reemergence.  Over the last several years, malware of all types, but specifically, scareware and fraudware attempt to scare people with fake security software into handing over the financial information to remove non-existent malware from their systems.  Koobface appears to depart from this trend, by providing links that social network users may be interested in viewing, specifically to content such as videos, trivia quizes, photos, and other enticing tidbits.

At this point, I recommend using a little common sense and restraint before clicking on links that direct you to an external site.  Security specialists are working on the issue, so keep your security software up-to-date.  More news on Koobface will follow.

Koobface Returns to Facebook

Friday, November 13th, 2009

The koobface worm has returned to facebook, and a few of my friends have already been affected by it.  The worm posts links to news feeds.  The link will take you to an external site where users will be asked to install an add-on.  The add-on is a more likely a trojan or other form of malware that will only make matters worse.

In order to stop this, your first step is to make sure your antivirus / antimalware software is current and completely up-to-date.  You should also run a scan to make sure that any issues are quickly taken care of.  If you’re account is posting links, you’re most likely infected and this should take care of it.

If you receive a suspicious external link, you shouldn’t click on it.  However, some links can be disguised pretty well.  If you find yourself on a site that is asking to install some kind of add-on, close the window immediately to prevent the infection from escalating.