A Buffer Overrun is actually a common attack on a computer that is designed by computer hackers. It is one of the most common forms of security risk, and it happens when unchecked external data is treated as trustworthy. These types of attacks are quite common with C and C++ coding that have poor coding practices in place.
Symptoms of Buffer Overrun
When a Buffer Overrun occurs, one of two things will happen. It could be that your application will abort with a core dump, access violation, or segmentation fault error message. That is unfortunately a best case scenario. In the worst case scenario a hacker can exploit weak files and add their own malicious code which can be hard to catch, until you realize your online security has been compromised.
Causes of Buffer Overrun
Malware can be the cause of Buffer Overrun, especially if the hackers have had their way with your computer’s files already. However, another cause may be a registry that has become corrupt due to being unorganized and cluttered. Whatever the cause may be, it is important to root out a Buffer Overrun as soon as it is discovered.
Fixing a Buffer Overrun
Whenever a Buffer Overrun problem occurs the first thing that you should do when attempting to fix it is run a complete anti-malware scan on your computer.
- Locate the anti-malware software icon on your desktop or computer tray.
- Double-click the icon.
- Run a full system anti-malware scan.
- Allow scan to compete.
- Any malware that is found should be put in quarantine or deleted.
Restart your computer after these actions to ensure all changes take effect.
If there is one thing no PC user wants to see it is that their CPU usage is at 100%. When this occurs it signifies that there are major troubles ahead and it is an issue that needs to be addressed right away.
100% CPU Usage Symptoms
If your PC is letting you know that your CPU usage is at 100% you will likely know it. Because this means that all of your available memory is being used, your PC will slow dramatically. In some cases, if not attended to in a timely manner, this problem can lead to far worse consequences such as frequent freezes and/or crashes.
100% CPU Usage Causes
There are many factors that can attribute to your 100% CPU Usage troubles. In some cases it may be that your PC has very little, or even cheap, memory. However, it is more commonly a problem with the PC itself such as malware running in the background without you knowing or a registry that is disorganized and/or corrupted.
Fixing 100% CPU Usage
When you see that you are at 100% CPU Usage the first thing to do is to check your memory. If you find that the memory your PC contains is sufficient then you likely have malware issues that need to be attended to.
- Start your PC in Safe Mode by pressing the F8 key during startup.
- Find the anti-malware software icon located on your tool tray or on your desktop and double-click to open it.
- Scan the entire PC instead of just doing a quick scan.
- Delete any and all malware or other adware programs that are found.
Restart your computer for changes to take place.
Internet Explorer helps to keep your information more secure by using security certificates. When there is a problem with these certificates you are alerted to that fact with a certificate error.
Symptoms of Certificate Errors
Usually when a Certificate Error occurs you are notified with a message that attempts to block the web page you are trying to access. You can ignore this message and proceed but you will then be doing so in an unsafe manner. Microsoft will alert you to this with a red address bar and a message that alerts you to the fact as well.
Cause of Certificate Errors
Many times there is no cause for a Certificate Error other than the fact that the website you are trying to visit is considered unsafe. It may be that the website is not accurately identifying itself and it may also be a problem with your compute being intercepted by a third-party server. This might be due to an incomplete Windows Update, a virus on your computer, or a registry that has allowed too many corrupt files to exist on your computer.
Addressing Certificate Errors
The first thing that should be looked at with Certificate Errors is you updates. Check and see if your latest version of Windows Updates has been completed. Even if you think it may have been you can always force a manual update as follows.
- Click on the Start Button.
- Click on the Control Panel.
- Double-Click where you see Windows Update.
- Allow Windows Updates to fully run.
- Restart computer once complete.
Should the troubles persist your computer might have a virus. In this case you can always run a complete virus scan of your entire PC deleting anything you may find.
Installer Error 1721is a rather annoying error that seems to occur with Windows XP users for the most part. This error will pop up when users of XP are trying to remove programs by using the add/remove function in Windows XP.
Installer Error 1721 Symptoms
The Installer Error 1721 will always alert you of itself with a pop up error message when it is taking place. Again, this error will happen when you are attempting to remove a program so the end result will be you not being able to do so, which can lead to a buildup of program useless files eventually leading to a slower computer.
Installer Error 1721 Causes
The Installer Error 1721 is a problem with Windows Installer. This problem can be caused by a program that has files containing a virus or it could be something far less sinister like your computer’s registry being corrupt. Either way, attention needs to be given to the problem so it doesn’t intensify.
Installer Error 1721 Solutions
One of the best ways to fix the Installer Error 1721 problem is by running the System File Checker. If there is a corrupt file with the Windows Installer this should fix it:
- Click, in order, the Start button – Run – then type cme.exe – OK.
- Once prompted, type scf/purgecashe and then press ENTER.
- Once prompted type scf/scannow and then press ENTER.
- Once prompted type EXIT and then press ENTER to close the command prompt.
- Restart your computer so changes can go into effect.
Attempt removal of desired program again.