Tag: Computer
September 08, 2008 by
Jason
The Windows Experience Index measures the capability of your computer’s hardware and software configuration and expresses this measurement as a number called a base score. A higher base score generally means that your computer will perform better and faster than a computer with a lower base score, especially when performing more advanced and resource-intensive tasks.
Each hardware component receives an individual subscore. Your computer’s base score is determined by the lowest subscore. For example, if the lowest subscore of an individual hardware component is 2.6, then the base score is 2.6. The base score is not an average of the combined subscores.
You can use the base score to confidently buy programs and other software that are matched to your computer’s base score. For example, if your computer has a base score of 3.3, then you can confidently purchase any software designed for this version of Windows that requires a computer with a base score of 3 or lower.
The base scores currently range from 1 to 5.9. The Windows Experience Index is designed to accommodate advances in computer technology. As hardware speed and performance improves, higher base scores will be introduced. However, the standards for each level of the index stay the same. For example, a computer scored as a 2.8 will remain a 2.8 unless you decide to upgrade the computer’s hardware. Read More»
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September 07, 2008 by
Jason Data Execution Prevention (DEP) is a security feature built into Windows Vista that helps prevent damage from viruses and other security threats by monitoring your programs to make sure they use system memory safely.
If you’re trying to use a program that’s being blocked from running by DEP this guide might be able to help.
Warning: Make sure the program being blocked is not a virus. Another reason for DEP blocking software is because it’s been written so poorly it would make your system unstable. Use this guide at your own risk.
Turn Off DEP for an Individual Program
1. Open the Control Panel.
2. Make sure the Control Panel is in classic view by clicking Classic View in the left pane of the control panel.
3. Open System. Read More»
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September 04, 2008 by
Jason A lot of folks who use computers aren’t experts and don’t want to be. Does this sound like you? You don’t adjust the timing belt or change the spark plugs in your car you take it to a mechanic. Why should your PC be any different, you wonder? You think you’ll spend five minutes on a computer problem, and three hours later, you still aren’t any closer to fixing the problem. You might not even know what the problem is yet!
Rather than trying to become a PC mechanic overnight, there’s a simpler way to fix the engine and get back on the road one that can save both your time and your sanity. Better yet, it’s one of the easiest tools to use and is already included in Windows Vista it’s called System Restore.
Get back
System Restore is like a big “Undo” button for Windows. It lets you undo changes to your computer’s operating system and programs without affecting personal files such as documents or photos. It’s a great solution if a program you downloaded or installed doesn’t work right, and you can’t seem to uninstall it or get back to where you were before. Read More»
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September 02, 2008 by
Jason While Apple’s Macs running OS X are without a doubt making inroads into the territory owned by Microsoft and PC makers with Windows machines, the fact of the matter is that the Redmond company and its OEM partners still account for the vast majority of the operating system and computer markets.
As far as consumer trends are concerned, there is a palpable shift from traditional desktops to laptops, and Microsoft is not only delivering Windows Vista, an operating system tailored to a mobile lifestyle, but it is also prepared to offer guidance on the acquisition of a new computer. From the Windows Guide library, the Redmond company has made available for download the Windows Laptop Selector Buying Basics.
“GHz? MBs? SDRAM? You don’t have to speak nerd to find a great laptop. Our Buying Basics makes it simple and straightforward to understand what you need to know when looking for your next PC,” reads an excerpt from the guide. Of course that the decision to buy a new machine orbits around money. “Many people see price as the biggest factor when buying a PC. A bargain-basement price may seem tempting now, but will it give you the laptop you want for the long haul? Technology changes rapidly and even if you spend less today, you might end up paying more tomorrow just to keep up with new software.” Read More»
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Windows Memory Diagnostic is a free utility available for download from Microsoft designed to sniff out flaws in a machine’s RAM modules. The fact is that the source of the now ubiquitous blue screen is not always Windows, or any piece of code for that matter. The fault could just as well reside in system memory, and this is where Windows Memory Diagnostic comes in. The tool is capable of evaluating the RAM on a computer and identifying any error.
“Windows Memory Diagnostic supports x86-based computers with the following microprocessors: Intel - Pentium or Celeron families; AMD - K6, Athlon, or Duron families; and microprocessors compatible with those listed above. You can test all types of RAM that run on x86-based computers with the supported microprocessors,” reveals Microsoft’s description of the tool.
Both Windows Vista and Windows XP users will be able to create bootable media (either a floppy or a CD) which can be used in its turn in order to boot the computer. Windows Vista already features the tool integrated as a default component under Administrative Tools, or accessible via the Repair option in the operating system’s installation media. Read More»
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If you are running a Windows operating system, regular updates need to be installed. Although it is unfortunate that the operating system needs patches, it is good that this happens on a regular basis. By default Windows will be configured to automatically download and install updates.
But even the update process can have errors, in which case the whole computer update will fail. This potentially means security wholes are not patched, so nobody wants this to last too long. In many cases the solution is to turn off the automatic updates and manually update Windows. This means browsing to the Windows update website and scanning your computer for the necessary updates from there. If the manual update succeeeds, the automatic update function can be turned on again.
However, not all Windows update errors can be solved this way. Some are related to the svchost.exe process and others are related to the Windows installer, msiexec. In the case of Windows installer problems, it can help to re-register the installer program, msiexec. Read More»
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The Carnegie-Mellon University (CMU) made available a Firefox extension developed at their School of Computer Science and College of Engineering that improves security in Firefox by protecting against man-in-the-middle attacks. The extension, named Perspectives, is available only for Firefox 3 and works on Windows, Linux (32-bit) and OS X (Intel), with support for Linux (64-bit) and Open Solaris being in the experimental stage of development.
A man-in-the-middle attack is performed by intercepting the traffic between a user and a resource that he is trying to access. This can be achieved by exploiting several vulnerabilities, like the latest DNS cache poisoning or GMail accounts hacking incidents show.
When accessing a server resource using secure protocols like SSL or SSH, a correct identification of the server is required. This is achieved through digitally signed certificates. Due to the fact that certificates issued by trusted authorities like VeriSign are expensive, it became common practice for small businesses and websites to use self-signed certificates. Read More»
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Making a 64-bit copy of Windows Vista Service Pack 1 confirm that it is actually Vista SP1 might require a minimum amount of effort on behalf of the end user, such as right-clicking My Computer and selecting Properties, but things are a tad different when an application is programmed to identify the operating system versions or the service pack releases. According to Scott McArthur, Support Escalation engineer with the Setup & Cluster team, Microsoft Corporation Enterprise Support, application compatibility problems can emerge when a program will look for the service pack version in the wrong location in the registry. The example given involved an application designed especially for Vista SP1 failing to install on an x64 copy of Vista SP1.
“The application was checking for the OS version in a registry value, specifically: HKLM – SOFTWARE – Wow6432Node – Microsoft - Windows NT – CurrentVersion - CSDVersion. On the x64 version of Windows Vista Service Pack 1, however this value does not exist. The correct value does show up under HKEY_LOCAL_MACHINE – SOFTWARE – Microsoft - Windows NT – CurrentVersion - CSDVersion however. This highlights an inherent problem with relying on the registry method to capture this information. Read More»
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Some users are experiencing problems with their USB flash drive even when they have been guaranteed that they are compatible with Windows Vista. This is usually due to the wrong software drivers being installed. When you plug in your USB flash drive for the first time you may be required to install the drivers for it, however most USB flash drives do not come with a CD containing their drivers. The majority of drivers for USB flash drives will already have been installed with Windows Vista, so when you are asked to install the driver software for your USB flash drive select Locate and install driver software and then on the next screen choose I don’t have the disc. Show me other options, unless you do have a disc with the driver software on it, in which case allow Windows Vista to search the CD for the correct driver. Assuming that you do not have a CD with the software on it, choose Browse my computer for driver software and then instruct Windows Vista to look for the driver software on the hard drive where you installed Windows Vista. Make sure that the Include subfolders checkbox has been checked and then press Next to search your hard drive for the driver software. Once the software has been found a window may appear telling you that Windows cannot verify the publisher of the software, and as long as you are confident that the drivers are correct, select Install this driver software anyway. You may need to repeat these steps two or three times as new USB devices are found and it is important that you complete these steps for every device, otherwise your USB flash drive will continue to not be recognised. Read More»
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Learn how your hard drive and graphics card impact your system’s performance, and dig deep under the bonnet to discover and fix hardware issues.
In previous guides we have looked at improving your system’s performance by simply removing unwanted programs. The next area we want to understand is the impact your hard drive and graphics card have on your system.
Before we start examining your computer, we need to see what Windows Vista believes is possible from the system when it’s working at its best. Searching for ‘Performance’ in Start Search should lead you to the Performance Information and Tools analysis of your system. If any numbers are low, then you may wish to consider looking at these areas for replacement. My laptop has a lowest rating of 4.3, which is more than adequate, but should one number be low compared to the rest, I would consider replacing that element. If your computer is running low on RAM, for example, it will use the hard drive as an extension of memory, but this deals a fatal blow to your computer’s performance because the hard drive can be 1,000 times slower than memory. In my experience, a Windows Vista PC with just 1GB of memory will struggle unless your system is only lightly used. Read More»
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