Circuit Negma

C++, C, VB.NET, PCB, Electronics, Circuit Design

Archive for December, 2007

Microsoft Internet Explorer 6.x Repair for Windows XP

Posted by Circuit Negma on December 28, 2007


Method 1: Microsoft Internet Explorer 6.x Repair for Windows XP

From the Start menu, select Run.
In the Open field, type sfc /scannow (Note: There is a space between sfc and /scannow)
Select the OK button.
Follow the prompts throughout the System File Checker process.
Reboot the computer when System File Checker completes.

Method 2: Microsoft Internet Explorer 6.x Repair for Windows XP

From the Start menu, select Search, select All Files and Folders.
Select More Advanced Options and place a checkmark beside Search Hidden Files and Folders option.
Ensure that Search System Folders and Search Subfolders are also checked.
In the All or Part of the File Name box, type ie.inf
In the Look In drop-down menu, select C: or the letter of the hard drive that contains the Windows folder.
Click the Search button.
In the search results pane, find the ie.inf file located in Windows\Inf folder.
Right click the ie.inf file and click Install on the context menu.
Reboot the computer when the file copy process is complete.

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Secret Backdoor To Many Websites

Posted by Circuit Negma on December 22, 2007


Ever experienced this? You ask Google to look something up; the engine returns with a number of finds, but if you try to open the ones with the most promising content, you are confronted with a registration page instead, and the stuff you were looking for will not be revealed to you unless you agree to a credit card transaction first….
The lesson you should have learned here is: Obviously Google can go where you can’t.

Can we solve this problem? Yes, we can. We merely have to convince the site we want to enter, that WE ARE GOOGLE.
In fact, many sites that force users to register or even pay in order to search and use their content, leave a backdoor open for the Googlebot, because a prominent presence in Google searches is known to generate sales leads, site hits and exposure.
Examples of such sites are Windows Magazine, .Net Magazine, Nature, and many, many newspapers around the globe.
How then, can you disguise yourself as a Googlebot? Quite simple: by changing your browser’s User Agent. Copy the following code segment and paste it into a fresh notepad file. Save it as Useragent.reg and merge it into your registry.

CODE
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent]
@=”Googlebot/2.1″
“Compatible”=”+http://www.googlebot.com/bot.html”

Voila! You’re done!

You may always change it back again…. I know only one site that uses you User Agent to establish your eligability to use its services, and that’s the Windows Update site…
To restore the IE6 User Agent, save the following code to NormalAgent.reg and merge with your registry:

CODE
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent]
@=”Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)”

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Check Movie Quality Without Downloading All Files

Posted by Circuit Negma on December 22, 2007


From another site so thanks to them just spreading the word,

For those of you how want to see the quality without downloading all the files just do the following.
1. Download only part one to your desktop.
2. Right click on the RAR part one and click on EXTRACT FILES. a window will open
3. In that window go down to MISCELLANEOUS, and check the box KEEP BROKEN FILES
4. In the large window highlight the place to save the file and click on OK
5. When the RAR extraction stops and say’s you need part 2,
just cancel the extraction and part 1 will remain as a playable part.
Just view with VIC or what ever player you use and check the quality of video and sound.

Saves a lot of DL time on a bad CAM copy.

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Hiding files in JPEG

Posted by Circuit Negma on December 22, 2007


I never knew this was even possible:

Step 1: Get yourself a nice JPEG image.
Step 2: Archive the files you want hidden into a RAR archive
Step 3: Open the command prompt and merge them like this:

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copy /b image1.jpg+something.rar image2.jpg

Where image1.jpg is the original, something.rar is your archive of files, and image2.jpg is the final image.

For a more thorough writeup:

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10 reasons why PCs crash

Posted by Circuit Negma on December 22, 2007


10 reasons why PCs crash YOU must Know

Fatal error: the system has become unstable or is busy,” it says. “Enter to return to Windows or press Control-Alt-Delete to restart your computer. If you do this you will lose any unsaved information in all open applications.”

You have just been struck by the Blue Screen of Death. Anyone who uses Mcft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?

1 Hardware conflict

The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.

For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.

If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:

* Start-Settings-Control Panel-System-Device Manager.

Often if a device has a problem a yellow ‘!’ appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.

Sometimes a device might share an IRQ with something described as ‘IRQ holder for PCI steering’. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.

Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is

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. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).

When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.

To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.

2 Bad Ram

Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.

But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.

One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.

Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.

EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.

3 BIOS settings

Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.

Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.

A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer’s display.

Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to ‘yes’ to allow Windows to do this.).

4 Hard disk drives

After a few weeks, the information on a hard disk drive starts to become piecemeal or fragmented. It is a good idea to defragment the hard disk every week or so, to prevent the disk from causing a screen freeze. Go to

* Start-Programs-Accessories-System Tools-Disk Defragmenter

This will start the procedure. You will be unable to write data to the hard drive (to save it) while the disk is defragmenting, so it is a good idea to schedule the procedure for a period of inactivity using the Task Scheduler.

The Task Scheduler should be one of the small icons on the bottom right of the Windows opening page (the desktop).

Some lockups and screen freezes caused by hard disk problems can be solved by reducing the read-ahead optimisation. This can be adjusted by going to

* Start-Settings-Control Panel-System Icon-Performance-File System-Hard Disk.

Hard disks will slow down and crash if they are too full. Do some housekeeping on your hard drive every few months and free some space on it. Open the Windows folder on the C drive and find the Temporary Internet Files folder. Deleting the contents (not the folder) can free a lot of space.

Empty the Recycle Bin every week to free more space. Hard disk drives should be scanned every week for errors or bad sectors. Go to

* Start-Programs-Accessories-System Tools-ScanDisk

Otherwise assign the Task Scheduler to perform this operation at night when the computer is not in use.

5 Fatal OE exceptions and VXD errors

Fatal OE exception errors and VXD errors are often caused by video card problems.

These can often be resolved easily by reducing the resolution of the video display. Go to

* Start-Settings-Control Panel-Display-Settings

Here you should slide the screen area bar to the left. Take a look at the colour settings on the left of that window. For most desktops, high colour 16-bit depth is adequate.

If the screen freezes or you experience system lockups it might be due to the video card. Make sure it does not have a hardware conflict. Go to

* Start-Settings-Control Panel-System-Device Manager

Here, select the + beside Display Adapter. A line of text describing your video card should appear. Select it (make it blue) and press properties. Then select Resources and select each line in the window. Look for a message that says No Conflicts.

If you have video card hardware conflict, you will see it here. Be careful at this point and make a note of everything you do in case you make things worse.

The way to resolve a hardware conflict is to uncheck the Use Automatic Settings box and hit the Change Settings button. You are searching for a setting that will display a No Conflicts message.

Another useful way to resolve video problems is to go to

* Start-Settings-Control Panel-System-Performance-Graphics

Here you should move the Hardware Acceleration slider to the left. As ever, the most common cause of problems relating to graphics cards is old or faulty drivers (a driver is a small piece of software used by a computer to communicate with a device).

Look up your video card’s manufacturer on the internet and search for the most recent drivers for it.

6 Viruses

Often the first sign of a virus infection is instability. Some viruses erase the boot sector of a hard drive, making it impossible to start. This is why it is a good idea to create a Windows start-up disk. Go to

* Start-Settings-Control Panel-Add/Remove Programs

Here, look for the Start Up Disk tab. Virus protection requires constant vigilance.

A virus scanner requires a list of virus signatures in order to be able to identify viruses. These signatures are stored in a DAT file. DAT files should be updated weekly from the website of your antivirus software manufacturer.

An excellent antivirus programme is McAfee VirusScan by Network Associates

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. Another is Norton AntiVirus 2000, made by Symantec

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7 Printers

The action of sending a document to print creates a bigger file, often called a postscript file.

Printers have only a small amount of memory, called a buffer. This can be easily overloaded. Printing a document also uses a considerable amount of CPU power. This will also slow down the computer’s performance.

If the printer is trying to print unusual characters, these might not be recognised, and can crash the computer. Sometimes printers will not recover from a crash because of confusion in the buffer. A good way to clear the buffer is to unplug the printer for ten seconds. Booting up from a powerless state, also called a cold boot, will restore the printer’s default settings and you may be able to carry on.

8 Software

A common cause of computer crash is faulty or badly-installed software. Often the problem can be cured by uninstalling the software and then reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an application from your system properly. This will also remove references to the programme in the System Registry and leaves the way clear for a completely fresh copy.

The System Registry can be corrupted by old references to obsolete software that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean up the System Registry and remove obsolete entries. It works on Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME), NT4 and Windows 2000.

Read the instructions and use it carefully so you don’t do permanent damage to the Registry. If the Registry is damaged you will have to reinstall your operating system. Reg Cleaner can be obtained from

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Often a Windows problem can be resolved by entering Safe Mode. This can be done during start-up. When you see the message “Starting Windows” press F4. This should take you into Safe Mode.

Safe Mode loads a minimum of drivers. It allows you to find and fix problems that prevent Windows from loading properly.

Sometimes installing Windows is difficult because of unsuitable BIOS settings. If you keep getting SUWIN error messages (Windows setup) during the Windows installation, then try entering the BIOS and disabling the CPU internal cache. Try to disable the Level 2 (L2) cache if that doesn’t work.

Remember to restore all the BIOS settings back to their former settings following installation.

9 Overheating

Central processing units (CPUs) are usually equipped with fans to keep them cool. If the fan fails or if the CPU gets old it may start to overheat and generate a particular kind of error called a kernel error. This is a common problem in chips that have been overclocked to operate at higher speeds than they are supposed to.

One remedy is to get a bigger better fan and install it on top of the CPU. Specialist cooling fans/heatsinks are available from

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CPU problems can often be fixed by disabling the CPU internal cache in the BIOS. This will make the machine run more slowly, but it should also be more stable.

This Happens Lots on Laptops.

10 Power supply problems

With all the new construction going on around the country the steady supply of electricity has become disrupted. A power surge or spike can crash a computer as easily as a power cut.

If this has become a nuisance for you then consider buying a uninterrupted power supply (UPS). This will give you a clean power supply when there is electricity, and it will give you a few minutes to perform a controlled shutdown in case of a power cut.

It is a good investment if your data are critical, because a power cut will cause any unsaved data to be lost.

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How to find FTPs using google, FTP for Music/Mp3/Ebooks/Softwares,etc

Posted by Circuit Negma on December 22, 2007


How To Find Ftp’s The Easy Way’

I use google because its the best search engine en everyone can access .
The easiest search quote is “index of …”
Some kind of examples are:

index of ftp/ +mp3
index of ftp/ +divx
index of ftp/ +”whateveryouwant”

Google has many operators that should help you to specify your search
USE ThEM
There are also lots of advanced operators available
here are a few:

cache:
link:
related:
info:
stocks:
site:
allintitle:
intitle:
allinurl:
inurl:

eg:
allintitle: “index of ftp/mp3”

try to combine things and maybe u’ll find something

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15 Top Windows XP secrets

Posted by Circuit Negma on December 22, 2007


1. Useful key shortcuts available:

– Windows key + D – shows the desktop
– Windows key + M – minimizes all open windows
– Windows key + Shift + M – maximizes all open windows
– Windows key + E – Runs Windows Explorer
– Windows key + R – shows the RUN dialog
– Windows key + F – shows Search window
– Windows key + Break – shows System Properties box
– Windows key + TAB – Go through taskbar applications
– Windows key + PAUSE Display the System Properties dialog box
– Windows key + U Open Utility Manager
– ALT + TAB – Cycle through opened applications
– Hold down CTRL while dragging an item to Copy it
– CTRL + ESC Display the Start menu
– ALT + ENTER View the properties for the selected item
– F4 key Display the Address bar list in My Computer or
– NUM LOCK + Asterisk (*) Display all of the subfolders that are under the selected folder

2. Lock Windows to protect computer
You can lock Windows to protect the computer when leaving the station easily by creating a shortcut with the path rundll32.exeuser32.dll, LockWorkStation. The Windows key + L is also a shortcut to this feature.

3. Edit sysoc.inf to list all software
To show all software that can be removed from your computer (including protected Windows services), you can manually edit (using notepad for example) the sysoc.inf file located in Windows\inf\. Just remove the word hide next to the software pack.
*Note* – use this at your own risk. Removing critical components of the system will make Windows instable.

4. Windows XP comes with IPv4 and IPv6

Windows XP comes both IPv4 and IPv6 support. To enable IPv6, you can install the protocols needed with the command “ipv6 install” in the command-prompt. Then type ipv6 /? to see the options. The installation will not remove the IPv4 protocols so your current configuration will still work.

5. Access Task Manager with shortcut

To access the Task Manager easier, you can make a shortcut that points to %windir%\system32\taskmgr.exe.

6. Stop treating ZIP files like Folders

If you don’t want your Windows XP to treat ZIP files like folders, you can disable this component by running regsvr32 /u zipfldr.dll at the command prompt or Run dialog. If you start missing it, you can enable it by typing regsvr32 zipfldr.dll.

7. Run program as diffrent user

You can run a program as a different user. Right click an application and select Run As command.

8. Switch users leaving applications opened

You can switch users leaving the applications opened too (*NOTE* use this only when needed since it could lead to system instability).
Go to Task Manager – processes and end the process explorer.exe. This will end only your session and not all applications. Then go to Applications tab, click New task and type runas /user:domainname\username explorer.exe. A password prompt will appear to login to the desired username. The user’s session will start, with all your previously applications running.
I recommend to open first a command-line prompt and type runas /? to see all the options available.

9. Rename multiple files in Windows at once
Rename multiple files in Windows at once. Select them all, right click and select Rename. Enter the desired name. They will be renamed using what you specified, with a number in brackets to distinguish them.

10. Task kill feature in Windows

Windows has a task kill feature similar to Linux. Go to a command prompt and run the command tasklist to see running processes with PID numbers. Then type tskill <PID> to end the specific task. This forces an instant closing of the task.

11. Edit features with GPEDIT.MSC
You can edit many features by running gpedit.msc. You can add log on/log off scripts here and many features.

12. Edit accounts in the command prompt
You can edit accounts by running “control userpasswords2” at the command prompt.

13. Use systeminfo.exe to see System Information

You can use the systeminfo.exe command in the command prompt to see System Information, including all Windows updates and hotfixes.

14. Disable system services for maximum performance
There are system services that you can disable to free up the system’s load. To access the interface that permits you to make changes to system’s services, type services.msc and the command prompt.
This is a list of services that are *usually* useless and can be safely disabled.
Alerter
Application Layer Gateway Service,
Application Management
Automatic Updates
Background Intelligent Transfer
Clipbook
Distributed Link Tracking Client
Distributed Transaction Coordinater
Error Reporting Service
Fast User Switching Compatibility
IMAPI CD-Burning
Indexing Service
IPSEC Services
Messenger
Net Logon
Net Meeting
Remote Desktop Sharing
Network DDE
Network DDE DSDM
Portable Media Serial Number
Remote Desktop Help Session Manager
Remote Registry
Secondary Logon
Smartcard
SSDP Discovery Service
Uninterruptible Power Supply
Universal Plug and Play Device Host
Upload Manager
Webclient
Wireless Zero Configuration
WMI Performance Adaptor

*NOTE*: Make sure you don’t need them since some applications you’re using could depend on them. If you make any application to fail by disabling any of the services, go back and enable it again.

15. Repair Windows XP by using the XP installation CD
If your system failes to start due to an error related to missing HAL.DLL, invalid Boot.ini or any other critical system boot files you can repair this by using the XP installation CD. Simply boot from your XP Setup CD and enter the Recovery Console. Then run “attrib -H -R -S” on the C:\Boot.ini file and delete it. Run “Bootcfg /Rebuild” and then Fixboot.

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