Sunday, December 25, 2011
A to Z from Computer: how to install PROE 5.0
A to Z from Computer: how to install PROE 5.0: IT WAS CREATED BY ME.IF YOU HAVE ANY DOUBT,SEND SMS OR MAIL TO ME.ALL THE BEST FOR EVERYTHING...........................
how to install PROE 5.0
IT WAS CREATED BY ME.IF YOU HAVE ANY DOUBT,SEND SMS OR MAIL TO ME.ALL THE BEST FOR EVERYTHING...........................
Monday, October 31, 2011
A Virus Program to Disable USB Ports
In this post I will show how to create a simple virus that disables/blocks the USB ports on the computer (PC). As usual I use my favorite C programming language to create this virus. Anyone with a basic knowledge of C language should be able to understand the working of this virus program.
Once this virus is executed it will immediately disable all the USB ports on the computer. As a result the you'll will not be able to use your pen drive or any other USB peripheral on the computer. The source code for this virus is available for download. You can test this virus on your own computer without any worries since I have also given a program to re-enable all the USB ports.
2. It contains the following 4 files.
· block_usb.c (source code)
· unblock_usb.c (source code)
3. You need to compile them before you can run it. A step-by-step procedure to compile C programs is given in my post - How to Compile C Programs.
3. Upon compilation of block_usb.c you get block_usb.exe which is a simple virus that will block (disable) all the USB ports on the computer upon execution (double click).
4. To test this virus, just run the block_usb.exe file and insert a USB pen drive (thumb drive). Now you can see that your pen drive will never get detected. To re-enable the USB ports just run the unblock_usb.exe (you need to compile unblock_usb.c) file. Now insert the pen drive and it should get detected.
5. You can also change the icon of this file to make it look like a legitimate program. For more details on this refer my post – How to Change the ICON of an EXE file (This step is also optional).
HOW TO MAINTAIN YOUR DESKTOP AND LAPTOP
Dust, cigarette ash, pet hair, and other particles can accumulate on or inside the notebook PC. When this happens, they form a layer of grime that can scratch or shorten the life of hardware components by causing overheating. Cleaning the notebook PC can extend its life by getting rid of this potentially damaging buildup. Cleaning the system once a year as part of a regular maintenance program is recommended.
Clean the Cooling Vents
Depending on the model, vents can be found on the side, back, and/or bottom of the notebook PC. These vents allow air to flow through the PC and keep it cool. Buildup inside these vents impedes the cooling process. Purchase a can of compressed air (available at most computer retailers) and blow the particles out of the vents.
Clean I/O Ports
The back of the notebook PC has a series of ports. After cleaning the cooling vents, take the compressed air and blow out any debris that may have accumulated in and around these ports.
Clean the Display
LCD screens accumulate smudges and scratches all the time. To clean these, choose a non-abrasive cloth or towel. Shut the computer off and disconnect the power cable. Wipe the LCD screen gently with a soft dry cloth. If any marks remain, moisten the cloth with LCD cleaner, and then gently stroke the cloth across the display in one direction, moving from the top of the display to the bottom. Plastic and glass cleaners containing ammonia may leave a glare-causing film, so use a computer monitor specific cleaner from a computer store. Spray the cleaner onto the cloth, then wipe the screen with it.
| CAUTION: | Never spray or pour any liquid directly on the LCD panel. Do not clean the screen while the system is on. |
| NOTE: | Do not use any of the following chemicals or any solutions that contain them: Acetone, ethyl alcohol, toluene, ethyl acid, ammonia, or methyl chloride. If you have a different chemical or solution and are not sure whether it is suitable, do not use it. Using any of the chemicals in the previous list may cause permanent damage to the LCD screen. Some commercial window cleaners contain ammonia and are therefore unacceptable. |
Be sure the LCD screen is dry before closing it or using the computer.
LCD Maintenance
Follow these tips to avoid damage to the LCD display.
Do not place anything heavy on the notebook.
When using a carrying case or backpack, do not overstuff the carrying case. This can apply extra pressure to the notebook case and LCD back.
Do not scratch, twist or hit the surface of the LCD screen.
Avoid subjecting the LCD screen to extremes of temperature and humidity.
Avoid exposing the LCD screen to direct sunlight or strong fluorescent light for long periods of time.
Avoid hard physical shocks to the system.
Clean the Keyboard
If a small vacuum cleaner with a brush attachment is available, use it to clear the keyboard of debris. A can of compressed air can be used to blow out particles that get in between the keys.
FUN IN COMMAND PROMPT
Some Other Fun on Command Prompt
At first start command prompt from Start > Run, the type in cmd click on OK and enter the following command:
title your Custom Message
Here your Custom Message indicates any message. Then hit Enter check out the title bar of
the command window. Just a cheap little trick…
Here is another.. Run command prompt and type in
prompt whatever you want it say
For example if you type prompt hello your c: prompt will change to hello
That’s all for now Have fun and enjoy..
At first start command prompt from Start > Run, the type in cmd click on OK and enter the following command:
title your Custom Message
Here your Custom Message indicates any message. Then hit Enter check out the title bar of
the command window. Just a cheap little trick…
Here is another.. Run command prompt and type in
prompt whatever you want it say
For example if you type prompt hello your c: prompt will change to hello
That’s all for now Have fun and enjoy..
Top 15 Ways to Extend Your Laptop’s Battery Life
Laptops tend to lose their charm quickly when you’re constantly looking for the nearest power outlet to charge up. How do you keep your battery going for as long as possible? Here are 15 easy ways to do so.
1. Defrag regularly - The faster your hard drive does its work – less demand you are going to put on the hard drive and your battery. Make your hard drive as efficient as possible by defragging it regularly. (but not while it’s on battery of course!) Mac OSX is better built to handle fragmentation so it may not be very applicable for Apple systems.
2. Dim your screen – Most laptops come with the ability to dim your laptop screen. Some even come with ways to modify CPU and cooling performance. Cut them down to the lowest level you can tolerate to squeeze out some extra battery juice.
3. Cut down on programs running in the background. Itunes, Desktop Search, etc. All these add to the CPU load and cut down battery life. Shut down everything that isn’t crucial when you’re on battery.
4. Cut down external devices – USB devices (including your mouse) & WiFi drain down your laptop battery. Remove or shut them down when not in use. It goes without saying that charging other devices (like your iPod) with your laptop when on battery is a surefire way of quickly wiping out the charge on your laptop battery.
5. Add more RAM - This will allow you to process more with the memory your laptop has, rather than relying on virtual memory. Virtual memory results in hard drive use, and is much less power efficient. Note that adding more RAM will consume more energy, so this is most applicable if you do need to run memory intensive programs which actually require heavy usage of virtual memory.
6. Run off a hard drive rather than CD/DVD - As power consuming as hard drives are, CD and DVD drives are worse. Even having one in the drive can be power consuming. They spin, taking power, even when they?re not actively being used. Wherever possible, try to run on virtual drives using programs like Alcohol 120% rather than optical ones.
7. Keep the battery contacts clean: Clean your battery’s metal contacts every couple of months with a cloth moistened with rubbing alcohol. This keeps the transfer of power from your battery more efficient.
8. Take care of your battery – Exercise the Battery. Do not leave a charged battery dormant for long periods of time. Once charged, you should at least use the battery at least once every two to three weeks. Also, do not let a Li-On battery completely discharge. (Discharing is only for older batteries with memory effects)
9. Hibernate not standby – Although placing a laptop in standby mode saves some power and you can instantly resume where you left off, it doesn’t save anywhere as much power as the hibernate function does. Hibernating a PC will actually save your PC’s state as it is, and completely shut itself down.
10. Keep operating temperature down - Your laptop operates more efficiently when it’s cooler. Clean out your air vents with a cloth or keyboard cleaner, or refer to some extra tips by LapTopMag.com.
11. Set up and optimize your power options – Go to ‘Power Options’ in your windows control panel and set it up so that power usage is optimized (Select the ‘max battery’ for maximum effect).
12. Don’t multitask – Do one thing at a time when you’re on battery. Rather than working on a spreadsheet, letting your email client run in the background and listening to your latest set of MP3′s, set your mind to one thing only. If you don’t you’ll only drain out your batteries before anything gets completed!
13. Go easy on the PC demands – The more you demand from your PC. Passive activities like email and word processing consume much less power than gaming or playing a DVD. If you’ve got a single battery charge – pick your priorities wisely.
14. Get yourself a more efficient laptop - Laptops are getting more and more efficient in nature to the point where some manufacturers are talking about all day long batteries. Picking up a newer more efficient laptop to replace an aging one is usually a quick fix.
15. Prevent the Memory Effect - If you’re using a very old laptop, you’ll want to prevent the ‘memory effect’ – Keep the battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries (which most laptops have) which do not suffer from the memory effect.
Bonus Tip #1: Turn off the autosave function. MS-Word’s and Excel’s autosave functions are great but because they keep saving regular intervals, they work your hard driver harder than it may have to. If you plan to do this, you may want to turn it back on as the battery runs low. While it saves battery life in the beginning, you will want to make sure your work is saved when your battery dies.
Bonus Tip #2: Lower the graphics use. You can do this by changing the screen resolution and shutting off fancy graphic drivers. Graphics cards (video cards) use as much or more power today as hard disks – Thanks Andrew
Update 7/7/07: Bonus Tip #1 to give caution about turning off autosave, tip #8 to change information about discharging batteries – thanks to all who pointed it out. Added Bonus tip #2, Tip #1 to add in clause in regards to Mac OSX, Tip #1 about the spinning of hard drives – thanks to all who pointed it out
1. Defrag regularly - The faster your hard drive does its work – less demand you are going to put on the hard drive and your battery. Make your hard drive as efficient as possible by defragging it regularly. (but not while it’s on battery of course!) Mac OSX is better built to handle fragmentation so it may not be very applicable for Apple systems.
2. Dim your screen – Most laptops come with the ability to dim your laptop screen. Some even come with ways to modify CPU and cooling performance. Cut them down to the lowest level you can tolerate to squeeze out some extra battery juice.
3. Cut down on programs running in the background. Itunes, Desktop Search, etc. All these add to the CPU load and cut down battery life. Shut down everything that isn’t crucial when you’re on battery.
4. Cut down external devices – USB devices (including your mouse) & WiFi drain down your laptop battery. Remove or shut them down when not in use. It goes without saying that charging other devices (like your iPod) with your laptop when on battery is a surefire way of quickly wiping out the charge on your laptop battery.
5. Add more RAM - This will allow you to process more with the memory your laptop has, rather than relying on virtual memory. Virtual memory results in hard drive use, and is much less power efficient. Note that adding more RAM will consume more energy, so this is most applicable if you do need to run memory intensive programs which actually require heavy usage of virtual memory.
6. Run off a hard drive rather than CD/DVD - As power consuming as hard drives are, CD and DVD drives are worse. Even having one in the drive can be power consuming. They spin, taking power, even when they?re not actively being used. Wherever possible, try to run on virtual drives using programs like Alcohol 120% rather than optical ones.
7. Keep the battery contacts clean: Clean your battery’s metal contacts every couple of months with a cloth moistened with rubbing alcohol. This keeps the transfer of power from your battery more efficient.
8. Take care of your battery – Exercise the Battery. Do not leave a charged battery dormant for long periods of time. Once charged, you should at least use the battery at least once every two to three weeks. Also, do not let a Li-On battery completely discharge. (Discharing is only for older batteries with memory effects)
9. Hibernate not standby – Although placing a laptop in standby mode saves some power and you can instantly resume where you left off, it doesn’t save anywhere as much power as the hibernate function does. Hibernating a PC will actually save your PC’s state as it is, and completely shut itself down.
10. Keep operating temperature down - Your laptop operates more efficiently when it’s cooler. Clean out your air vents with a cloth or keyboard cleaner, or refer to some extra tips by LapTopMag.com.
11. Set up and optimize your power options – Go to ‘Power Options’ in your windows control panel and set it up so that power usage is optimized (Select the ‘max battery’ for maximum effect).
12. Don’t multitask – Do one thing at a time when you’re on battery. Rather than working on a spreadsheet, letting your email client run in the background and listening to your latest set of MP3′s, set your mind to one thing only. If you don’t you’ll only drain out your batteries before anything gets completed!
13. Go easy on the PC demands – The more you demand from your PC. Passive activities like email and word processing consume much less power than gaming or playing a DVD. If you’ve got a single battery charge – pick your priorities wisely.
14. Get yourself a more efficient laptop - Laptops are getting more and more efficient in nature to the point where some manufacturers are talking about all day long batteries. Picking up a newer more efficient laptop to replace an aging one is usually a quick fix.
15. Prevent the Memory Effect - If you’re using a very old laptop, you’ll want to prevent the ‘memory effect’ – Keep the battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries (which most laptops have) which do not suffer from the memory effect.
Bonus Tip #1: Turn off the autosave function. MS-Word’s and Excel’s autosave functions are great but because they keep saving regular intervals, they work your hard driver harder than it may have to. If you plan to do this, you may want to turn it back on as the battery runs low. While it saves battery life in the beginning, you will want to make sure your work is saved when your battery dies.
Bonus Tip #2: Lower the graphics use. You can do this by changing the screen resolution and shutting off fancy graphic drivers. Graphics cards (video cards) use as much or more power today as hard disks – Thanks Andrew
Update 7/7/07: Bonus Tip #1 to give caution about turning off autosave, tip #8 to change information about discharging batteries – thanks to all who pointed it out. Added Bonus tip #2, Tip #1 to add in clause in regards to Mac OSX, Tip #1 about the spinning of hard drives – thanks to all who pointed it out
Using command prompt "attrib" to check for Viruses or Malware
Microsoft Command Prompt "attrib" is a very useful tool to check if your hard drives even your flashdisks have been infected by a virus.
You will know if a Malware is inside your hard drive just by looking at the attributes of each files and the file that has the attributes of +s +h +r
The function of attrib is to set and remove file attributes (read-only, archive, system and hidden).
Launch attrib
To start attrib
Go to Start Menu > Run
Type cmd (cmd stands for command prompt)
Press Enter key
The Command Prompt will appear showing us where is our location in the directory.
command prompt showing the current location in the directory
Using attrib
To use attrib
Go to the root directory first by typing cd\(because this is always the target of Malware / Virus)
2. Type attrib and press Enter key
after typing attrib, all the attributes of all the files (excluding folders) will be shown
Benefits of Rooting your Android Phone
I recently purchased an HTC Wildfire phone and I must say this is one of the coolest phone (in terms of budget and features) out there.. - 3 months ago
Spanish Galleon Andalucia
The Spanish Galleon Andalucia visited the beautiful island of bohol from October 23-26,2010. - 11 months ago
Uchiha Sasuke Team Hebi
Hebi (means snake) is a group of specialized shinobi created by Uchiha Sasuke having one goal in mind, and that is to kill his brother Uchiha Itachi. - 11 months ago
In this example, I have two files that are considered as malware.
Note that there are two files which I outlined in red (SilentSoftech.exe and autorun.inf). Since you cannot see this file nor delete it (because the attributes that was set on these files are +s +h +r)
+s - meaning it is a system file (which also means that you cannot delete it just by using the delete command)
+h - means it is hidden (so you cannot delete it)
+r - means it is a read only file ( which also means that you cannot delete it just by using the delete command)
Now we need to set the attributes of autorun.inf to -s -h -r (so that we can manually delete it)
Type attrib -s -h -r autorun.inf ( be sure to include -s -h -r because you cannot change the attributes using only -s or -h or -r alone)
Type attrib again to check if your changes have been commited
If the autorun.inf file has no more attributes, you can now delete it by typing del autorun.inf
Since SilentSoftech.exe is a malware you can remove its attributes by doing step 1 and step 3(just change the filename) ex. attrib -s -h -r silentsoftech.exe
a) I typed the attrib command with the -s -h -r setting b) the result after I pressed enter - autorun.inf has no attributes left
There you have it!!!!
NOTE : when autorun.inf keeps coming back even if you already deleted it, be sure to check your Task Manager by pressing CTRL + ALT + DELETE ( a virus is still running as a process thats why you cannot delete it. KILL the process first by selecting it and clicking End Process.
NOTE: You can also apply the attrib -s -h -r command to all the partition of your computer, drive D: drive E: drive F: (all of your drives). For example. for drive D, just type "D:" (minus the double quote) then you can see that your current drive is D.. type there the command "attrib -s -h -r *.exe" for exe files and "attrib -s -h -r *.inf" and then delete the file by "del autorun.inf".
Hope this helps!!!!! :) Jah bles!
You will know if a Malware is inside your hard drive just by looking at the attributes of each files and the file that has the attributes of +s +h +r
The function of attrib is to set and remove file attributes (read-only, archive, system and hidden).
Launch attrib
To start attrib
Go to Start Menu > Run
Type cmd (cmd stands for command prompt)
Press Enter key
The Command Prompt will appear showing us where is our location in the directory.
command prompt showing the current location in the directory
Using attrib
To use attrib
Go to the root directory first by typing cd\(because this is always the target of Malware / Virus)
2. Type attrib and press Enter key
after typing attrib, all the attributes of all the files (excluding folders) will be shown
Benefits of Rooting your Android Phone
I recently purchased an HTC Wildfire phone and I must say this is one of the coolest phone (in terms of budget and features) out there.. - 3 months ago
Spanish Galleon Andalucia
The Spanish Galleon Andalucia visited the beautiful island of bohol from October 23-26,2010. - 11 months ago
Uchiha Sasuke Team Hebi
Hebi (means snake) is a group of specialized shinobi created by Uchiha Sasuke having one goal in mind, and that is to kill his brother Uchiha Itachi. - 11 months ago
In this example, I have two files that are considered as malware.
Note that there are two files which I outlined in red (SilentSoftech.exe and autorun.inf). Since you cannot see this file nor delete it (because the attributes that was set on these files are +s +h +r)
+s - meaning it is a system file (which also means that you cannot delete it just by using the delete command)
+h - means it is hidden (so you cannot delete it)
+r - means it is a read only file ( which also means that you cannot delete it just by using the delete command)
Now we need to set the attributes of autorun.inf to -s -h -r (so that we can manually delete it)
Type attrib -s -h -r autorun.inf ( be sure to include -s -h -r because you cannot change the attributes using only -s or -h or -r alone)
Type attrib again to check if your changes have been commited
If the autorun.inf file has no more attributes, you can now delete it by typing del autorun.inf
Since SilentSoftech.exe is a malware you can remove its attributes by doing step 1 and step 3(just change the filename) ex. attrib -s -h -r silentsoftech.exe
a) I typed the attrib command with the -s -h -r setting b) the result after I pressed enter - autorun.inf has no attributes left
There you have it!!!!
NOTE : when autorun.inf keeps coming back even if you already deleted it, be sure to check your Task Manager by pressing CTRL + ALT + DELETE ( a virus is still running as a process thats why you cannot delete it. KILL the process first by selecting it and clicking End Process.
NOTE: You can also apply the attrib -s -h -r command to all the partition of your computer, drive D: drive E: drive F: (all of your drives). For example. for drive D, just type "D:" (minus the double quote) then you can see that your current drive is D.. type there the command "attrib -s -h -r *.exe" for exe files and "attrib -s -h -r *.inf" and then delete the file by "del autorun.inf".
Hope this helps!!!!! :) Jah bles!
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