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Troubleshooting Hardware Boot-Up Problems (Part-2)

On Minggu, 14 September 2008 Diposting oleh Unknown Label: boot, hardware, problem, troubleshoot

Advanced Troubleshooting When a computer is first turned on, the hardware runs a Power-On Self Test (POST). If errors are encountered during this POST test, they are usually indicated by a beep or in the form of a code displayed on the screen. With this error code you can determine what part of the system is having problems and find a solution. You have probably heard a beep code in the past and just not realized it. You know the one or two short beeps your computer makes when you first turn it on, that is a beep code indicating everything checks out OK. With some PC's it may seem like there isn't any beep code, what is probably happening here is there is a problem with the internal speaker inside the PC, it is either not present, not functioning any longer or not connected properly to the motherboard. If this is the case in your instance, check to see a visual code is being displayed on the monitor, if nothing then skip ahead to the next section. To check for an error code on your PC, turn the computer on and listen for any beeps or look on the monitor screen for a code. As I mentioned, one or two short beeps indicates everything is OK, if you experience any different sequence or length of beeps, write down what you heard, (e.g. 1 long beep followed by two short beeps) or write down the error code on the screen. Error codes vary from PC to PC depending on the manufacturer of the motherboard inside the PC. It would be beyond the scope of this guide to include every manufacturer error codes as some may be missed and some may change as new technology is introduced. Performing a search on the Internet using your favorite search engine will find many sites specific to your PC. They will have a list of codes, what they mean and potentially how to fix them, look for the code you wrote down previously. The hardware generally checked by the POST test is the motherboard, CPU, power supply, memory and video card. If the error c! ode indicates a problem in one of these areas, make sure all cards in the PC are seated correctly in the motherboard slots and that the power supply cables are connected snuggly to the motherboard. If all of this has been done and you still receive an error code then chances are the device has failed and will need to be replaced. If the POST test doesn't reveal the source of the problem the next step is to open up the PC. Staying with the theme of keeping it simple we will want to try and start the PC with the minimum hardware required to boot a computer. All you need to boot a PC is the motherboard, memory, some sort of media (floppy disk, hard disk, CD, etc.) and a video card. What we will want to do is remove or disconnect any unnecessary hardware. <ol style="text-align: justify; font-family: arial;font-family:arial;"><li>Leave one form of media drive connected to boot with, preferably the floppy drive if available, and disconnect all other drives. </li><li>Remove all cards except for the video card. </li><li>Remove all memory except for one stick </li><li>Insert bootable media (floppy disk, CD, etc.) and power on the PC </li></ol><div style="text-align: justify; font-family: arial;"> </div>If the PC doesn't boot with the minimum hardware then the problem may lie with the video card, memory or the motherboard. Try using a different stick of memory if you have one as well try using a different video card. Friends and family can be great sources for this, ask to borrow their video card or memory from their PC, just make sure to return it when you are done. If swapping the memory and video card don't work then you more than likely have a problem with the motherboard and it will need to be replaced. If it does boot. <ol style="text-align: justify; font-family: arial;font-family:arial;"><li>Turn it off </li><li>Insert or connect one hardware device that was previously removed </li><li>Try booting again. </li><li>Repeat these steps until the computer no longer boots. </li></ol><div style="text-align: justify; font-family: arial;"> </div>Once the PC doesn't boot again the last hardware device that was connected is the problem and should be replaced or permanently removed. If you get to this point and your PC still doesn't want to load an operating system then it is time to have a qualified computer technician look at the problem or purchase a new PC. You gave it your best shot but sometimes a fresh set of eyes can see something that may have been missed.by: Keith Park

Advanced Troubleshooting When a computer is first turned on, the hardware runs a Power-On Self Test (POST). If errors are encountered durin...

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How To Correct A Continually Rebooting Computer

On Jumat, 09 Mei 2008 Diposting oleh Unknown Label: bios, computer, problem, reboot, system, viruses

<div style="text-align: justify;"> When you sit down at your computer desk and press the power switch on your desktop, the last thing you want to experience is a continually rebooting computer. There are a variety of causes that contribute to this problem, from something as simple as a stuck power button to a much more serious problem as your power supply slowly failing. Other causes for this problem may be overheating PC components, or viruses affecting your system. Now, if you’re like the rest of us, having a computer that reboots constantly is not our idea of a productive day. So how do you diagnose this problem and where do you start to to make corrections. Here are some common but often overlooked causes and solutions that will get your system running again. First take a look at the power button and see if its stuck in the socket. If so, you may be able to simple tap the front of the case to release the button. In some cases, you may have to remove the system unit cover to get the button to return to the out position. If you cannot stop the computer from rebooting by pressing the power button and releasing it, turn off the power switch in the back of the computer next to the power supply. If your power supply do not have a power switch, you will have to unplug the system from the wall outlet. This must be done as soon as possible so that the constant rebooting will not damage components such as the hard drive. Constant rebooting also have the danger of power surges that can further damage larger components such as the motherboard. Second you check your computer’s software by checking to be sure no virus or malware have not effected your hard drive. Virus and malware are small software that is downloaded along with other files that is designed to cause mischief. To remove any viruses and malware, use a anti-virus program that will search your hard drive and remove these file quickly. These files can cause such damage as wiping your hard drive of all data or hijacking your web browser so you have no control over your online surfing. If you find no malware on your computer, take a look at your BIOS to see if it has become unstable or has been changed. BIOS stands for Basic Input Output System and is a small program designed to check all components for proper operation when the computer is turned on. If your BIOS has been changed or if you’re not sure if its been changed, try to reset the BIOS settings to the default settings after you access the BIOS as the computer reboots.Once inside the BIOS, you should have the option to load your default settings, save the change, and reboot the computer. However, there are times when a continually rebooting computer will not allow you to access the BIOS. You can then reset the BIOS by removing the system unit cover and locating the jumper on a three pin header. You must consult your computer or motherboard manual to properly perform this procedure and it should be done as a last resort. Before making any changes to your BIOS, you should backup your BIOS if your computer reboots at long intervals. After checking your computer’s software for its rebooting problem, you must check to be sure hardware is not at fault. This problem may exist because one of your memory modules are unseated from its socket . Memory modules are long, narrow sticks that attach to the motherboard. Remove any static electricity from yourself, remove the system unit cover and check these memory modules to be sure they are secure. Check the connections to the hard drive and the connections leading from the power supply. Power supply connectors should be checked if you’ve done work inside your computer recently. Power Supplies are known to slowly fail and lead to rebooting problems. There is no way to check an ailing power supply and this should be considered the problem as a last resort. Following these steps will help you correct any computer that continually reboots itself. If no virus or malware is found, carefully and thoroughly check all connections. And if the problem still exist, the most likely cause would be the Power Supply. </div>About The Author <div style="text-align: left;">Otis F. Cooper is solely dedicated to boosting the knowledge and confidence of every computer user. Sign up to receive his informative articles every month and learn PC Repair absolutely free.Sign up now at <a class="hft-urls" href="http://www.ultimatepcrepair.com/" style="font-family: arial;">http://www.ultimatepcrepair.com</a></div>

When you sit down at your computer desk and press the power switch on your desktop, the last thing you want to experience is a continually ...

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