Posts Tagged ‘Drivers’

Tips For Troubleshooting Missing Driver Errors On Your PC

A common cause of driver errors is missing drivers. If a driver is missing, you will not able to access the related hardware device. For instance, if your sound driver is missing, then you will not be able to access your sound card. You will receive an error whenever a program tries to access your sound card.

Unlike many other computer errors, driver errors occurring due to a missing driver are fairly easy to resolve. You can fix common driver errors using a reliable driver maintenance tool. You can read the Driver Finder review to learn how driver maintenance software quickly scans all the hardware devices installed on your computer and helps you install any missing driver.

You can also troubleshoot missing driver errors by manually installing the missing driver. The problem with manually installing a driver is that this method can be time consuming.

In case the driver that is missing was not integrated with your operating system, check to see if you have the driver CD with you. If you have the driver CD, insert the driver CD in your CD or DVD drive and install the missing driver from there.

If you don’t have the driver CD or you downloaded the driver from the internet, then visit the driver manufacturer’s website and download the required driver from there. Save the file on your desktop, and double-click it to install the missing driver.

In case the driver you require is not present on the manufacturer’s website, you can use your search engine to locate websites that are offering the driver you need as a free download. Just remember to scan the files before installing the driver to ensure that the downloaded driver is free of malware.

As you can see, locating and installing missing drivers manually can be tedious. Moreover, you run the risk of installing a rogue program, especially when you download the required driver from unsolicited websites. That is why we recommend that you use reliable driver maintenance software to fix missing driver errors.

Now that you understand how to fix missing driver errors manually, let’s see what other circumstances—in addition to a missing driver—can cause driver errors.

Driver errors can occur if your driver files are infected, if Windows files are outdated, or if the entries related to your drivers in the registry are missing or incorrect.

In case you are receiving driver errors even when the related driver is present on your computer, then you may use the following tips to fix the error.

First, scan your entire computer for infections. In case the scan results show the presence of malware, promptly delete them and restart your computer.

In case no malware was found, install the latest Windows updates and restart your computer. Next, check to see if the driver issue is resolved.

If the error persists, scan your registry for errors using a reliable and easy-to-use registry repair software.

2 comments - What do you think?  Posted by Jimmy Daniels - January 17, 2011 at 2:43 am

Categories: Drivers   Tags: , , , , ,

Serious Wireless Exploit Released

An exploit involving a wireless driver created by Broadcom Corp. that is built into millions of new laptops created by HP, Dell, Gateway and other computer makers as well as some devices made by Linksys and Zonet, has been released, it is for a specific version, but the writer says it could easily be modified to different versions from different manufacturers. The flaw could be used to take complete control of any vulnerable machine that is within a few hundred feet. This flaw is active on most of these machines because of the background checking it does for wireless networks, so even if it is not connected to a wireless network, it is vulnerable.

A security researcher has released a set of instructions for exploiting a security flaw in the wireless Internet devices built into millions of new laptops from HP, Dell, Gateway and other computer makers. An attacker could use the flaw to take complete control over any vulnerable machine located within a few hundred feet, so be forewarned that reading the rest of this post could make you awfully leery of that guy sitting in the corner booth at Starbucks gleefully clacking away on his laptop.

According to the latest addition to the Month of Kernel Bugs project, the vulnerability resides in a flawed device driver from Broadcom Corp. that is bundled with many different laptops and built in to some devices made by Linksys and Zonet. The flaw is exploitable on vulnerable Windows machines whether or not the machine is connected to a wireless network. In fact, it is the wireless card’s background scan for available wireless networks that apparently triggers the flaw. Source: Exploit Targets Widely Deployed Wireless Flaw from SecurityFix via Faill.com

Here is a quote from the original post and a link to it.

The Broadcom BCMWL5.SYS wireless device driver is vulnerable to a stack-based buffer overflow that can lead to arbitrary kernel-mode code execution. This particular vulnerability is caused by improper handling of 802.11 probe responses containing a long SSID field. The BCMWL5.SYS driver is bundled with new PCs from HP, Dell, Gateway, eMachines, and other computer manufacturers. Broadcom has released a fixed driver to their partners, which are in turn providing updates for the affected products. Linksys, Zonet, and other wireless card manufactures also provide devices that ship with this driver. Source: Broadcom Wireless Driver Probe Response SSID Overflow

This could be a SERIOUS problem in the future, some organizations use Dell exclusively for their laptops, if they don’t come up with an easy way to update these laptops to the latest driver, lots of people could be exploited. I can see a whole new crop of botnets springing from Internet cafes, and places that allow free wireless internet access. Someone setting outside with a better antenna could seriously take advantage of some organizations, this could get ugly. Ask your resellers about it now, not later, and get them working on an easy solution for you.

Update: George OU, who writes Real World IT blog at zdnet, has some more information and a fix posted using an updated Linksys driver. The exploit no longer functions with this driver, but they have only tested it on a couple devices, while it should on work on most, I would think, there is always a chance something could go wrong.

Yes this is an UGLY solution but it’s all we have at this point. Broadcom should have provided certified drivers to Microsoft for inclusion in Windows Update but they didn’t. But even then, Microsoft device driver updates are never pushed out as automatic critical updates and we all know that if it isn’t automatic and seamless it probably won’t get done. This is something Microsoft needs to address with the PC industry in general because driver exploits are becoming very common and very dangerous. Source: Real World IT

2 comments - What do you think?  Posted by Jimmy Daniels - November 12, 2006 at 6:04 am

Categories: Drivers, Security, Wireless   Tags: , , , , ,

Apple Wi-Fi Exploit Released

Security researcher HD Moore has released code that shows how attackers can exploit an unpatched flaw present in some Apple wireless drivers. Moore said he tested this on a 1.0Ghz PowerBook running Mac OS X 10.4.8 with the latest updates, and while Apple released updates to fix three other problems with these wireless drivers, this flaw is still unpatched.

“With all the hype and buzz about the now infamous Apple wireless device driver bugs (brought to attention at Black Hat, by Johnny Cache and David Maynor, covered up and FUD’ed by others), hopefully this will bring some light (better said, proof) about the existence of such flaws in the Airport device drivers,” said LMH (the alias of the hacker who runs the Kernelfun blog) — referring to an Apple wireless driver issue covered by Security Fix earlier this year (the links in the quote are his). Source: Security Fix

To see the exploit code and the release, click here Apple Airport 802.11 Probe Response Kernel Memory Corruption,

The Apple Airport driver provided with Orinoco-based Airport cards (1999-2003 PowerBooks, iMacs) is vulnerable to a remote memory corruption flaw. When the driver is placed into active scanning mode, a malformed probe response frame can be used to corrupt internal kernel structures, leading to arbitrary code execution. This vulnerability is triggered when a probe response frame is received that does not contain valid information element (IE) fields after the fixed-length header. The data following the fixed-length header is copied over internal kernel structures, resulting in memory operations being performed on attacker-controlled pointer values.

A spokesman from Apple had this to say,

We were recently made aware of this security issue in our first generation AirPort card, which has not shipped since October 2003. This issue affects a small percentage of previous generation AirPort enabled Macs and does not affect currently shipping or AirPort Extreme enabled Macs. We are currently investigating the issue.” Source: Security Fix

Fun, fun, fun.

Be the first to comment - What do you think?  Posted by Jimmy Daniels - November 2, 2006 at 4:43 pm

Categories: Apple, Drivers, Security   Tags: , , ,

Windows XP Update Crashes Some PCs

Users who forgo recently released SP1 risk a major vulnerability, as well as missing numerous small fixes.

Some Windows XP users are having trouble installing the operating system’s first service pack, bulging with bug fixes and updated drivers–and are judging the cure worse than the disease.

Although SP1 plugs a major hole in the OS, the fix has been painful for a tiny but vocal few of the estimated 1 million users who have downloaded the update, which Microsoft posted on September 9. For the vast majority, the download and installation has gone well, according to a Microsoft spokesperson, who calls the process “smoother than a lot of previous releases.”

But Internet support forums and e-mail to PC World from disgruntled users show that many people continue to have serious problems with the update. The chief complaint: PCs that run like molasses after installing SP1. Running a close second are reports that PCs refuse to restart after installation or become highly unstable. Some systems continuously reboots. Other users complain that applications won’t start or now crash repeatedly, including Microsoft’s own programs.

Click here for more.

Be the first to comment - What do you think?  Posted by Jimmy Daniels - March 26, 2004 at 10:20 pm

Categories: Tips, Windows XP, Windows XP Tips   Tags: , , , , ,

How to Add OEM Plug and Play Drivers to Windows XP (Q314479)

This article describes the steps required to add original equipment manufacturer (OEM)-supplied drivers to Microsoft Windows installations. This article includes only those drivers that are typically installed during graphical user interface (GUI)-mode Setup or post-Setup by standard Plug and Play enumeration. This permits you to pre-load OEM Plug and Play drivers that you can use later, when the associated hardware is introduced in the system.

Drivers that are installed during the “Installing Devices” portion of GUI-mode Setup have to be found in certain locations. At this point, Setup installs the devices (by using Plug and Play IDs) that have been enumerated by Windows Plug and Play. Setup searches a predefined path on the drive, looking in .inf files to find the best match for the Plug and Play ID of the device.

Click here for the article.

Be the first to comment - What do you think?  Posted by Jimmy Daniels - February 13, 2004 at 2:47 am

Categories: How To, Tips, Windows XP, Windows XP Tips   Tags: , ,