3.7.6 Practice Questions Memory Trouble shooting

Which of the following are critical times when memory problems manifest themselves? (Select two.) After you remove or install hardware After you reconfigure the BIOS/UEFI After cleaning the dust from inside your computer After installing new drivers on your computer On the first boot of a new computer

After you remove or install hardware On the first boot of a new computer Explanation The following are critical times when memory problems manifest themselves: On the first boot of a new computer After you remove or install hardware If done properly, cleaning the dust from inside your computer is not a likely cause of memory problems. While reconfiguring the BIOS/UEFI might cause memory problems, you will rarely (if ever) change settings that cause memory problems with your computer. Installing new drivers might impact computer hardware such as printers, DVD drives, and graphics cards, but the process rarely impacts your computer memory.

You are attempting to boot a new system. The boot fails, and the system sounds a beep code. Which of the following describes the MOST likely cause of this error? answer Either a card/memory module is not seated properly or the system includes unsupported memory. Either no memory is installed or the memory was not detected. The POST failed to recognize all of the memory. The new memory is not compatible and was not installed and configured properly.

Either no memory is installed or the memory was not detected. Explanation If the system boot fails and sounds a beep code, the most likely cause is that either no memory is installed or the memory was not detected. If a card or memory module is not seated properly or the system includes unsupported memory, the system will boot, but the display will remain blank. If POST fails to recognize all of the memory, the system will boot, but the memory count will be incorrect.

There are critical times when memory problems often manifest themselves. Match each critical time on the left with the corresponding cause of the memory problems on the right.

Explanation At the critical times listed below, memory problems can manifest themselves. First boot of a new computer - memory is not properly seated, is missing, or the motherboard is defective. After a memory upgrade - memory is incompatible and was not installed and configured properly. After software installation - can cause problems if there is not enough memory for the software. After hardware installation or removal - incompletely or improperly installed hardware can cause errors that appear to be memory-related.

You have installed a new computer with a quad-core 64-bit processor, 6 GB of memory, and a PCIe video card with 512 MB of memory. After installing the operating system, you see less than 4 GB of memory showing as available in Windows. Which of the following actions would MOST likely correct this issue? answer Update the memory controller driver in Device Manager. Install a 64-bit version of the operating system. Incorrect answer: Disable the AGP aperture in the BIOS. Flash the BIOS.

Install a 64-bit version of the operating system. Explanation In this scenario, the most likely cause is that the operating system is a 32-bit operating system. You must use a 64-bit operating system to use memory above 4 GB. The AGP aperture is a method for sharing system memory with an AGP video card instead of PCIe. With shared memory, some of the memory is used by the video card and is not available for the system. Flashing the BIOS does not have an impact on the amount of memory available in Windows. You do not update memory controller drivers.

After installing two memory modules, you power on the system to check for errors. You find that the BIOS program recognizes only one of the memory modules. Which of the following is BEST to try first when troubleshooting this issue? answerCorrect Answer: Make sure that both modules are seated properly in their slots. Reboot the computer and run memory diagnostic tests. Incorrect answer: Scan for new devices in Device Manager and enable any disabled memory modules. Return both modules for a replacement. Change the memory timings in the BIOS to a slower (higher) setting.

Make sure that both modules are seated properly in their slots. In this scenario, you should first check to make sure that you installed the memory correctly, such as making sure that the modules are seated properly in their slots. Most BIOS programs include a memory count that displays the total amount of system memory. After the memory is installed correctly, if it is still not recognized, try removing one module to identify which module has the problem. Move the modules to different motherboard slots to see if you can get the system to detect the memory. In most cases, you will not need to change the memory timings. When you do, it is typically because the system is unstable or crashes. Device Manager will not find new memory that the BIOS does not recognize. Returning both modules for a replacement is one of the last steps you should take to resolve the issue. Testing memory helps you identify when specific memory storage locations are going bad.

You are in the process of configuring a new computer. The motherboard has four memory slots and supports dual-channel memory. You install two memory modules. When you boot the computer, the BIOS recognizes both modules, but the memory is not configured to run in dual-channel mode. What should you do to resolve the issue? Change the CAS latency to a higher setting. Add continuity modules to unused memory slots. Move the modules to the correct motherboard slots. Replace the memory with dual-channel capable memory.h

Move the modules to the correct motherboard slots. Explanation To use dual-channel memory, you need to install memory in the correct slots. Depending on the motherboard, the two slots might be next to each other or be alternating. Consult the motherboard documentation for the correct configuration. Continuity modules are used with Rambus RAM. If continuity modules were required on this system, none of the memory would have been detected. Dual-channel support is mainly a function of the motherboard, not the memory itself. The CAS latency is used for memory timing. You might modify the timing if the system is unstable at the current memory timing settings.

Which type of software-generated problems can indicate that a software bug is causing a memory error? (Select three.) answerCorrect Answer: Page fault Exception error Incorrect memory count Parity interrupt Memory mismatch Correct Answer: General-protection fault

Page fault, Exception error, General-protection fault Explanation Software-generated memory problems include the following: Exception error General-protection fault Page fault Memory mismatch display an error indicate that usually indicates discrepancies between new and old memory. Parity interrupt usually indicates a failing module or discrepancies between new and old memory. An incorrect memory count can happen with incompatible memory installation. Remember to avoid combining dual-bank memory with single-bank memory.

As a computer technician, you are troubleshooting a client's computer that is experiencing intermittent crashes and sudden reboots. The client reports that these issues started happening after a recent memory upgrade. You have already confirmed that the new memory modules are compatible with the system and are properly installed. What would be the next BEST step to diagnose the issue? answer Check the system for any software bugs. Install a new operating system on the computer. Correct Answer: Run a memory diagnostic tool to check for any memory errors. Check the system's power supply for any fluctuations.

Run a memory diagnostic tool to check for any memory errors. Running a memory diagnostic tool to check for any memory errors is the correct answer. Running a memory diagnostic tool can help John identify if there are any issues with the new memory, such as errors that only occur under certain conditions (i.e., intermittent errors). Installing a new operating system is not the correct step. The problem is related to the memory upgrade, not the operating system. While software bugs can cause system crashes and reboots, the client reported that these issues started after a memory upgrade. Therefore, it's less likely that a software bug is the cause, making this option incorrect. While power supply fluctuations can cause system instability, the client reported that the issues started after a memory upgrade. Therefore, it's less likely that the power supply is the cause, making this option incorrect.

After installing a new RAM module, you boot your 64-bit system, but the display remains blank. What is the MOST likely cause of this issue? answer The POST failed to recognize the new memory. You have installed a 32-bit memory module. You have installed a non-parity RAM on an ECC system. The Registry is configured to write to faulty sections of RAM.

You have installed a non-parity RAM on an ECC system. Explanation Non-parity (or non-ECC) memory is incompatible with an ECC system, which is the mostly likely cause of the blank screen. Memory modules are not configured as 32-bit or 64-bit modules. When parts of the Registry are written to faulty sections of RAM, you a dealing with a software-generated memory problem, which is not likely to be the issue in this scenario. If the POST fails to recognize the new memory, the system will still boot, but your memory count will be incorrect.

Which of the following are the MOST likely signs that your computer might need more memory? (Select two.) You receive an exception error when running a software program. You system boots, but the display remains blank. Your hard drive light on the system case is on for long periods of time. Your system boots, but the memory count is incorrect. Your hard drive is constantly operating as you work.

Your hard drive light on the system case is on for long periods of time. Your hard drive is constantly operating as you work. You may need to add more physical memory to your computer if: You hear the hard drive constantly operating as you work. The hard drive light on the front of the system case stays illuminated for long periods of time. If your system boots, but the display remains blank, it could be that a card is not seated properly or you have unsupported memory. It is not a likely sign that you need more memory