diagnostics

RAM sticks, known for their chip creep and random failures, are among the more annoying pieces of hardware to pinpoint as the source of a technical issue. Before you start digging around in the tower, it's best to start with a quick and free memory check via Windows. This way, you'll know whether or not it's worth swapping around sticks of RAM to see which one is the dud.

Here's how to get started:

Step 1: Open the Start Menu and type in mdsched.exe, then press enter.

Step 2. A pop-up will appear on your … Read more

All it takes it a single visit to a compromised Web site to snare a nasty piece of malware or to pick up cookies that track your every browsing move. And there's nothing worse than a computer that is bogged down so much that it impedes your ability to work or play games. Advanced Systemcare aims to remedy whatever ails your computer by not only cleaning up junk files, malware, and invalid registry entries, but by giving your computer a boost to optimize your PC experience.

Advanced Systemcare's interface is broken down into four maintenance categories so as … Read more

iObit's previous version of Advanced SystemCare was the second most downloaded program on Download.com in 2011, and there's little suprise why: the free Windows utility packs a bevy of optimization tools for cleaning out malware and junk files, along with an "Internet Boost" tool to configure your system based on how you are using it. Despite aggressive upselling of its Pro version, ASC and its comprehensive set of free features clearly impress Download.com users.

New version 6 promises improved performance, faster program launching, a lighter installation, and more efficient scanning, but the most obvious … Read more

Apple's Bonjour service in OS X is a convenient zero-configuration autodiscovery technology that allows the operating system to locate and present various network services available to you. For example, if a computer on the network has file sharing available, then the system will discover that and make it available in relevant areas of the system such as the Finder, and also allow your system to easily discover shared printers, remote log-in capability, screen sharing, and similar services the remote computer may have enabled.

While convenient, most of the services that Bonjour broadcasts are contextual, meaning that they only appear … Read more

One useful addition to OS X that Apple included in version 10.7, aka Lion, was a network diagnostics tool for generating troubleshooting reports and monitoring network performance. The tool was fairly well-rounded and helpful for troubleshooting networking problems, and in OS X Mountain Lion Apple has enhanced it with additional options and features.

First off, while previously the tool was only available from directly in the /System/Library/CoreServices folder, it is now more conveniently available by holding the Option key, clicking the Wi-Fi menu, and selecting Open Wi-Fi Diagnostics.

When the utility opens, you will have two general … Read more

Your car's dashboard is probably home to a speedometer, a tachometer, a fuel gauge, and -- if you're lucky -- a coolant temperature gauge. However, your car's electronic brain (ECU) is actively monitoring dozens of parameters behind the scenes that you, the driver, could find useful. This is where diagnostics hardware and apps like Torque Pro and Lite for Android step in, putting all of that data at your fingertips.

Torque doesn't require anything more than the hardware already present on your Android phone to function. Without any external hardware, Torque can still pull sensor data … Read more

iStat Menus is a comprehensive set of system monitoring tools, providing a quick-access view of system activity in your menu bar.

Formerly a free preference pane, iStat Menus is now a paid, standalone app--but it offers a lot of functionality to justify its price, along with a clean interface and very low system overhead. You need to open iStat Menus when you're configuring it, but most of the time you'll only see the app in an array of highly configurable menu-bar icons. iStat Menus can help you track CPU activity, memory usage, disk usage, disk activity, network activity, … Read more

Many of us have relied on rapid diagnostic tests at one time or another, whether it's testing for pregnancy, blood glucose levels, or strep throat.

But while dropping fluid samples on a small strip for near-instantaneous results is affordable and convenient, reading results using the human eye means there is the potential for, well, human error.

So researchers at UCLA have taken the human out of the equation as much as possible and developed a digital "universal" reader for all rapid diagnostic tests, or RDTs, that requires no translation of results.

In the journal Lab on a … Read more

During the H1N1 flu pandemic of 2009, which spread across more than 200 countries and killed more than 18,000 people, it became clear that flu diagnosis was often taking too long and resulting in frequent false negatives.

Today, researchers from Boston University, Harvard, and the Beth Israel Deaconess Medical Center are reporting in the journal PLoS ONE that they have built a microfluidic chip that rivals in accuracy the gold-standard diagnostic test known as RT-PCR but is faster, cheaper, and disposable.

For their four-year study, which involved 146 patients with flu-like symptoms and was funded by the National Institutes … Read more