Frequent memory failure analysis 1, memory capacity in Windows decreased?
Fault Phenomenon: When booting, the BIOS detects that the memory capacity is 128MB, but after entering Windows, it is found in "System Properties" and "General" after entering Windows. The memory capacity is only 64MB.
Fault Analysis and Processing: It may be selected in the System Configuration Utility to select "XXMB", or apply the application under Windows 32. Check memory restrictions: Select "Programs", "Accessories", System Tools ", Tools, System Configuration Utilities," General "," Advanced ". In the 12 settings of "Advanced Troubleshooting Settings", the 9 item is "limiting memory to xxmb". If the hook is hooked in the check box, the hook should be removed. Then select OK to restart the machine. Check the software supported by Windows 32: Recall that the older software is recently installed, you can view what a spider silk is available in Config.sys.
2, the memory is inserted behind the first memory slot, can the machine can't start?
Fault phenomenon newly bought 128MB memory strips, the computer can not start after use. There are 3 DIMM memory slots on the motherboard. The original memory is inserted on the second memory slot, so plugging the new memory strip on the first memory slot. This memory is originally tested on the computer, and it must be available.
Fault Analysis and Processing: Because the first memory on the motherboard has a certain relationship, it is very strict for memory. Therefore, the memory that can be used is not necessarily used to start. The third slot may be used when testing, and this time is the first memory strip. Insert the new memory strip on the third memory slot, or replace the memory module.
3, the second memory slot causes the power-on screen?
Fault Phenomenon: Just assembled computers, 128MB SDRAM memory is inserted on the second memory slot, inserted in the first memory slot.
Fault analysis and processing: This is a relatively common fault. In this case, you can display it normally if you have a memory on both tanks. The stability of the first memory slot is better than the latter memory slot. Therefore, if such problems, please solve the memory strips on the first memory slot. Replace the memory module and use the appropriate memory slot.
4, memory detection time is too long?
Fault Phenomenon: The computer instead of the computer needs to be repeated 3 times when it is turned on.
Fault Analysis and Processing: As the computer is basically configuring the memory capacity, the start memory self-test time is more and more, and sometimes several detection can be performed before the memory can be detected. At this time, the user can use the ESC button to directly skip detection. . When booting, press the DEL key to enter the BIOS setup, select the "BIOS Features Setup" option, set the "Quick Power On Self Test" to "Enabled", and then store exit, the system will skip the memory self-test. Or use the ESC to manually skip the self-test.
5, the motherboard does not know the memory module?
Fault Phenomenon: A ASUS 128MB memory bar, the motherboard is not recognized after the boot.
Fault Analysis and Process: Use the replacement method to check, so on other motherboards, according to the experience, it is not a memory chip, which is a problem. So I found a multimeter for measurement (this section has a total of 16 chips). Draw a graphic of the memory strip first, to the number of each chip, and standard the number of pins. In this way, when measured with the universal table, you can measure the side, and it will not be mixed. First measure the sheets with each chip, and the corresponding feet on the substrate and the respective foot of the chip are measured. When it is measured on the 23rd foot on the substrate, the corresponding chip is discovered is open. Three measurements is indeed. So the electric iron is moved, and it can be welded carefully.
6, memory chip damage processing?
Fault Phenomenon: A 4MB x 16 piece 64MB of miscellaneous PC-133 memory sticks can be on the frequency of 145MHz. Self-test is 65536kb, entering Windows 98, and crashes when running large programs. Fault Analysis and Processing: It is estimated that a memory chip on the memory module has a bad point. Use the Himem.sys and DOS 6.22 of Windows 98 to detect the memory error, the error address is consistent with 02E103E0. After the machine is started multiple times, there is a change in the capacity of each self-test, and it is 49100kb for a while, and it is 48304kb. And as long as the self-test is not 64MB, Win98 will fail, and the system is "protecting the error". At this point, it is basically that the memory bar is damaged. To repair, you must find which chip is broken, Himem.sys error address is 02E103E0, which can be calculated by it. Open Windows 98 calculator, select a scientific calculator, use hexadecimal, enter 02E103E0, press the decimal option, convert the decimal error address of 48301024. Then, two 1024 is then obtained, resulting in 46.0634, which is the specific gabel of the error point. Since this memory module single chip capacity is 4MB, it is divided by 11.5158, which is a specific chip position. The number of results is greater, that is, the eleventh chip has a bad point. Now just replace the good memory chip, it is difficult to find a good co-capacity memory chip, and the pin is intensive, the surface welding process is high, and the personal amateur welding level is really difficult. It seems that this method can't. However, because the first 32MB is intact, can this memory module be transformed into 32MB memory? This requires 8 chips on the back of the memory strip to make the system think this is 32MB of memory bar. Replace the tip soldering iron to open the first pin and the last pin of the first piece of the chip, and provoke it with a needle. Upload test, the result display is not bright, the system is not self-test. Remove the lines of the gold fingers and boards that repeatedly observe the memory module, and found that the line leads need to be welded by the surface of some of the surface of the surface, and the system may be determined here. Is it a 64MB bar. Put them first, let the line interrupt to see if there is any result. These surface welded resistance capacitors are only larger than sesame, and there are generally two solder joints, and a solder joint with a solder joint with pointed iron is not good. Put the ordinary electric iron head with grinding stone, the size is approximately comparable to the component. After heat, unplug the power plug, contact the soldering iron to contact the side of the component (not too force, otherwise the pads and lines) will be damaged. At this time, the two solder joints were simultaneously melted, and the components were thased. Remove immediately with tweezers to avoid high temperature damage of components for a long time. After welding all 11 components in the reverse, clean the rosin on the plate with a cotton swab to wash the rosin, and then check that there is no small tin shot to remain in the chip pin. After the ethanol is evaporated, the cotton fiber hanging on the corner of the chip is swept. Test, 32768kb flash, run himem.sys test, no error, running Windows 98 / NT everything is normal. At this point, it is finally saved 32MB of memory.
7. Is the system unstable in miscellaneous memory?
Fault Phenomenon: The machine is configured: PIII 733CPU, STA6 motherboard, seven rainbow GEFORCE 2NV graphics card, miscellaneous 128MB memory, star diamond 20g hard disk, sound card is integrated, patriot 770ft display. After the machine hardware is installed, start installing Windows Me, but when the disk scan ends the installer, the machine crashes, and tried several times, so it is modified Windows 98, this time I entered the installer, the installation is also smooth, Just in the copy system file, it is okay, but it is okay to press "Cancel". After the installation, enter Windows 98, an open program report "illegal operation", then the "system internal error" system, please reinstall the system ", any program can not run, boot can only go to the desktop. Fault analysis and processing: According to experience, the above fault may be that hardware is not compatible or hardware has problems, but after replacement, there is no problem. It may be not compatible with the card and the motherboard. It is changed the GF2 graphics card of the Block Lai, which is still inserted. This graphics card and motherboard have no problem, the CPU is Remark. I tried overclocking, 733 800 is no problem, not a CPU. Finally, memory is left, because use of miscellaneous memory strips, and changed a golden memory module, boot detection, and the problem did not appear. Troubleshooting after replacing a well-known chip memory.
8, memory problem caused crash failure?
Fault Phenomenon: The computer is equipped with: PIII 800eb CPU, STR SA6R motherboard, seven rainbow GF2 MX 32M graphics card, gold diamond 6 generation 30G hard disk, Yamha 724 sound card, Winward 256MB memory, philips 105a display. The operating system is Windows ME. After a few weeks of the machine, the system has an error, blue screen, or even crashs from time to time.
Fault Analysis and Processing: When the machine is just starting, it occasionally there is blue screen, illegal operation, or even crazy situations, at the beginning, it is called Unstable Windows. But in a few days, there are some software, the game installation, and delete the situation. But did not find viruses; open "Device Manager" and did not find any hardware conflict, and there is no problem with the driver. Open the registry to see if there is any error-related file, the result is nothing. Have format the C drive and reinstall Windows. However, this way is no harder, which is the hardware problem. After checking, the cause of the crash is neither because the CPU temperature is too high, nor is the factor such as power supply. Finally, I suddenly thought of memory, so I borrowed a friend's modern 128MB memory bar plugged in, and the fault resolved. After changing a good memory, the fault resolution.
9. The memory strip fault causes the process of registry error?
Fault Phenomenon: After a computer is upgraded, always display the registry with an error when it is turned on, and the restart is required to be automatically repaired by the system. Sometimes restarting the system can fix, sometimes need to restart the system multiple times to fix the registry until it will not be repaired. However, if the system's prompt is ignored, the computer can work properly. The computer upgrades work is normal, and this error prompt has never emerged, this is the case after the upgrade. In fact, the upgrade only adds memory modules and replacing a larger hard disk. The computer configuration after the upgrade is still low, basically configured to upgrade from Celero 400 to Celero II 800, memory is 64 128MB, and the 6.4G hard disk is upgraded to Seagate 30g. Fault Analysis and Processing: Since the computer always shows that the registration form has an error, the system cannot be automatically repaired, the first thing I first thought is to call the registry and other registry compared to other normal computers, I found that there is not much difference, I suspect it The system is affected by viral attacks and destroys the system's repair function. First anti-virus, there is no signs of dye in the anti-virus. Reinstall the operating system, when the system is installed, the system is unable to carry out, only to exit the installation environment, the fault is still. Reinstall the entire system software from DOS. When the DOS system is installed, it will be turned on. Under normal circumstances, the system configuration file config.sys is to transfer HimeM.sys and Emm386.exe to the system, complete management of extended memory or expand memory. However, the system displays Himem.sys and Emm386.exe unable to manage extended memory and indicate that there is an error in an address of the extension memory. Replace the memory strip, the DOS system passes smoothly, and the Windows 98 system can also install smoothly, and the entire system will restore normal work.
10. How to deal with "insufficient memory" when playing games?
Fault Phenomenon: The microcomputer is used by the poison dragon 750 processor, with 128MB of memory, but when playing some games, there is often a prompt of "insufficient memory" instead of entering the game, but the model of another microcomputer is with this The microcomputer model is the same, but there is no such thing as it is playing the same game.
Fault Analysis and Process: Tips "Insufficient memory", not necessarily installed, if your computer already has 16MB of memory, then playing a general game should not be a problem. As for the "insufficient memory", it is mainly due to improper memory settings. The internal memory can be divided into basic memory, upper memory, high-region memory, expansion memory, and multiple memory, and their division is set by the user, specifically in the config.sys file, by himem.sys and Emm386.exe selection different parameters in two command lines. Therefore, physical memory is the same, and it is not equal to the various memory regions set. Various game software is not the same as the requirements of various memory, and in the memory settings, some games may not be possible, and the so-called "insufficient memory" phenomenon. Simply reset memory is resolved.
11. Use the registry to retrieve the "lost" memory?
Fault Phenomenon: In the process of using Windows 98, "124MB RAM" is displayed in the convention items when "My Computer | Properties" is read. The memory used is 128MB RAM, and I don't know why 4MB RAM is lost.
Fault Analysis and Processing: So sometimes it is sometimes not accurate because of the usual note of Windows 98 when displaying the hard disk available space. So I entered the MS-DOS mode, with the "MEM" command, displaying the normally. Restart your computer, see "My Computer | Properties", which is still "124MB RAM". Using KV3000 , Kingsoft Internet Security and other anti-virus software, kill viruses and did not find viruses. Thus, when it is turned on, there is always a prompt information found in "vnetsup.vxd". Doubt lost 4MB RAM is related to this tip. Using the Registry Editor to find the "vnetsup.vxd" string under the registry: hkey_local_machine / system / currentcontro1s-etc / vxd ", after deleting this primary key, exit regedit.exe, restart your computer, no longer have any error prompt View "My Computer / Properties", the General item displays "128MB RAM". "Vnetsup.vxd" strings are information about the computer ID and username in the network settings. Thus, the cause of the fault, before this For curiosity, try to increase the dial network and TCP / IP protocol to the computer system. Since the hand does not have a Windows 98 system installation disk, the selected network component is deleted item by item. However, Windows 98 has put the computer Identification and user information manned registry, since the content is not deleted in the registration, the network's driver needs to take a part of the system RAM.12, 96MB memory why becomes a negative mean?
Fault Phenomenon: The original computer has a modern 32MB memory. Recently, I have bought a modern 64MB memory. After loading, everything in Windows 98 is normal, but in the DOS environment, it includes (DOS 6.22 and DOS 7.0) run certain DOS game, display expansion memory is negative for more than ten MBs (such as -32768), resulting in the game that cannot be running, the system always prompts "not enough memory", but the previous only 32MB memory is running very normal.
Fault Analysis and Processing: Generally, because it is a modern strip, it should not cause any hardware failure as long as the memory quality is no problem. From the above situation, because the game is a few years ago, it may be because some game software considers no circumference when prepared at the time, only one 16bit word indicates the capacity of memory, if in KB A 16bit word can only represent 64MB of memory, but if this word is considered as a sign number (that is, the highest bit is symbolic bit), it can only represent 32MB of memory, more than 32MB It will be explained to a negative number, and 96MB of memory is exactly 32MB of approximately negative.
This problem can be resolved in one of the following methods: (1) Create a multi-start configuration in DOS's config.sys and autoexec.bat, specifying a buffer with SMARTDRV when running the game start configuration, so that the game is available The extended memory has dropped below 32MB, this method is the policy. (2) If the game software displays the total capacity of the extended memory, the first method may not work, at which time, you can add a switch "/ INT15 = 16384" in the startup configuration of the game, meaning Retain 16MB memory space, these spaces cannot be assigned according to the XM5 specification, nor will they be counted in the total capacity of the extended memory. (3) In order to play the game, unplug the 64MB SDRAM, then plug it, or work hard to practice Softice, track the game software, and test the symbolic comparison jump command to test the memory capacity to modify the symbolic comparison jump. This is the following policy. 13. What is the process of "insufficient memory" under Windows 98?
Fault Phenomenon: The machine is configured as: PIII 733 CPU, modern 128MB memory, Seagate's Cool Fish II 20G hard drive. Working is always normal, but not long, after using WinAmp to play MP3, it is no longer able to enter Word. The given tips are: "Insufficient memory, cannot run the program." At this point, other windows cannot be opened, and the given tips are also: "Insufficient memory, and cannot open the window."
