Guidelines for Servicing

Preparing Services

 
Troubleshooting guidelines and the important guide for servicing.

Electricity Control

•        Keep the PC unplugged when working inside it. As a rule, unplugged the Pc (don’t just turn it off) during upgrades or repairs.

•         Use one hand only for “hot” measurements. If you must makes measurements or probe around inside a powered system (especially inside the power supply), keep one hand behind your back. If you should contact to a live wire, there is no pathway through your heart.

• Use properly rated test probes.  If you attempt to measure high voltage through commercial test probes, you can be electrocuted right through the probe’s insulation.

Computer Troubleshooting Techniques

Common Troubleshooting Strategies and Techniques

The following article is based on years of experience.Being a good computer technician is based on experience but also in reading and research. I Challenge veryone not only PC technician can fix computer problems but you also can fix this problem just keep reading and keep searching from the internet Directron.com is one of the site how to fix computer problems. It is provided as a free service customers and visitor . Ho you are welcome to distribute these computer support tips free to your friends and associates as long as it’s not for commercial purposes and you acknowledge the source. . All of us will start from basic here are the basic troubleshooting techniques and Strategies in troubleshooting minor computer problems.

Here are five common-sense techniques and strategies to solve common computer hardware problems.

(1) Trial-and-error

Personal computers are highly modular by design. The most powerful trouble-shooting technique is to isolate the problem to a specific component by trial-and-error. Swap compatible components and see if the system still works. Try different peripherals on different machines and see if the same problem occurs. Make one change at a time.

(2) "It’s the cable, s—–."

More than 70% of all computer problems are related to cabling and connections. Ensure all cables are connected firmly. IDE and floppy ribbon cables and power cables can often go loose. Ensure microprocessor, memory modules, and adapters such as video card and sound card are inserted correctly and didn’t "pop-up" during transportation.

(3) Don’t be frustrated!

Don’t be afraid of computer problems. It is often the best opportunity to learn. Trouble-shooting is part of the fun of owning a computer. Imagine the satisfaction you could get by solving a problem yourself.

Of course the fun could ran out quickly once you are frustrated and have spent too much time on the same problem. If you feel frustrated, it’s time to leave it for a while and go back with some new ideas or call someone who can help. Rule of thumb: You shouldn’t spend more than three hours on the same problem at one time.

(4) Take notes!

Take notes of what you have done and all the error messages. You may need to use them later. For instance, when you see an unusual blue screen with an error message, copy the entire message onto a piece of paper. In many situations, that message may point to the right direction in getting the problem solved quickly.

(5) Take a look?

It’s OK to open a computer case and take a look inside. There is only 5V and 12V DC voltage supplied to the components outside the power supply. Those who have never seen the inside

Certified Instructor

 Hercor Collge is a new College in Roxas City Start on 2004 now just almost 4 years. Almost 80% instructors of hercor college is young and certified. For more information just visit our site www.Hercorcollege.edu.ph.

 
 This image below is from Hercor College Instructor for Computer Technician Student inside Computer Technician Laboratory. 

 MR. Renan Orola a computer troubleshooting and computer maintenance and serving instructor for second year student. President oF Hercor College Mr. Josie Hernandez bring Renan Orola and Lonito Dellava to Manila for seminar in Cellphone Repair. Phone - Training Center located at G/f 310 Don Jose Bldg. R. Hidalgo cor. A. Bautista Sts Quiapo, Manila or call 736-4599 / 4197858. And he is one of the 10 Certified Hardware Servicing NCII in the province of Capiz.

Demonstrate how to use hot air for repairing mobile phone

 Mr. Lonito Dellava is an instructor for Computer Hardware and Software installation for first year and Computer Networking for Second year.

 Mr. Perfecto Legaste is a new partime instructor, and teaching Monitor Troubleshooting for second year student.

 Teaching the students how use tester and the proper testing for components. 

 Sir Edison is a Part time instructor teaching computer technician student the basic electronincs and electricity.

Trained OJT

 Hercor College from roxas city capiz inside the computer technician laboratory has an OJT computer technician  student under Mr. Renan E. Orola. He trained well the OJT student teaching different strategies for fixing computer problems, the hardware and software computer problems. Also fixing cell phone problems and netwoking.

Marz Villariez Installling Windows XP 

Computer Technician OJT Marz Villariez with John Alisla, and Joselito Delos Reye Installing Application.

Computer Technician Student John Alisla installing linux operating system while Joselito Delos Reyes having a hardware toubleshooting.

how to remove autorun.inf

Computer Virus attacks!

There’s a strain of computer virus that infects the file server and workstations of the computer laboratory of Hercor College, Roxas City, Capiz, Philippines. It hides itself by using the name ctfmon.exe (Ctfmon.exe monitors the active windows and provides text input service support for speech recognition, handwriting recognition, keyboard, translation, and other alternative user input technologies.) It was detected by TrendMicro 2007 as PE_VBAC.A virus and as MianCrypt.Gen virus by AVAST.

The said virus hides itself inside a folder named Recycled. The folder has a hidden/system/read-only attribute, that’s why you can’t see it if you will use the Search window. When your system is infected by the said virus, it infects every drive connected to your PC by dropping VCAB.DLL to the internet temporary folder and creating the CTFMON.EXE to folder Recyled & AUTORUN.INF to the root directory of every drive. That’s why when you connect your USB sticks to the infected PC it will be infected immediately, the USB disks will be the new carrier for the virus. The program runs every time you start your computer because it copy itself in the Startup folder of the Start Menu. It also run every time your insert the infected USB disk and it triggers every time you Double-Click the infected drive (bcoz of the AUTORUN.INF). The virus infects .EXEs and .DLLs.

To check if your system is infected by the said virus without using an antivirus, do the following steps:

1. Go to command prompt.
2. Type CD\ in drive C to go the root directory
3. Type DIR /AH and press ENTER key. This will display all hidden files in your drive C
4. If you see a file AUTORUN.INF and a folder Recycled, then your system is infected.
5. Try doing this to your USB drive and check if your USB stick contains the same folder and AUTORUN.INF, if it does then your system is really infected.

To remove it download and install a trial version of Trendmicro and scan your system.

To manually remove it (but i’m not recommending it especially if the infections of Bacalid is very high try using an anti-virus such as McAfee or TrendMicro’s PCCillin) follow the following steps (This is the step I take when i repair my computer without an internet connection. Note you should understand what you’re about to do, you try it at your own risk!)

1. Boot your system in Safemode
2. Go to command prompt, in Drive C do the following commands.
3. Type -> ATTRIB -H -R -S AUTORUN.INF then press enter
4. Type -> DEL AUTORUN.INF then press enter
5. Type -> ATTRIB -H -R -S Recycled then press enter
6. In Windows Explorer in Safemode, remove the folder Recycled in drive C use Shift-Delete to delete the folder.
7. Repeat Step 3 to 6 for all drives of your system including the USB drive.
8. Search for CTFMON.EXE in your system using the Search of Windows found in Start Menu. If you find a file that is not located in C:\WINDOWS\SYSTEM32, delete it immediately. Dont forget to empty the recycle bin afterwards (Usually the virus will copy itself in the Startup folder of the Startmenu. Check if the file is present there and delete it then.)

To disable autorun of drives (i.e. everytime you double-click a drive or cd or usb, it is auto open) follow the following step:

1. Click Start->Run->type REGEDIT.EXE
2. Go to this key from the register HKEY_CURRENT_USER\Software\ Microsoft\Windows\CurrentVersion\Policies\Explorer
3. Look for the entry NoDriveTypeAutoRun, double click the entry
4. Type a new value : 0FF (Hex) for the NoDriveTypeAutoRun, this will turn off the AutoRun for all drives, and press ENTER
5. Reboot the system.
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   Tags: computer virus under autorun.inf virus attack recycled
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