Notebook computer Memory failure

There is less memory failure in the notebook computer, especially the original memory. If there is a problem with memory, the system will not start. Depending on the BIOS used, there are different alarms, mostly a continuous long "tick" sound, or a continuous short "beep" sound. The

Solution is to open the cover of the memory slot to replace the memory, usually without purchasing original memory (expensive). Note that laptops use a different amount of memory than a desktop computer, and only half the length of desktop memory. 3lian footage

1. Memory is not standard: Most laptops currently use PC100 or PC133 specification memory, which should have an SPD chip to store the basic parameters and specifications of the memory to provide BIOS identification and system calls. But some of the memory is not a SPD chip or a single pin with the same empty chip to impersonate the SPD chip. Such memory can be used is a fluke, stability is no guarantee, for no SPD chip memory, no matter how cheap prices are recommended you do not buy. In addition, some older machines use the 144-pin Edo memory, the memory and SDRAM encapsulation is the same, the appearance can not be seen, the maximum capacity of 128M, but its operating voltage is 5V instead of SDRAM 3.3V, if mistakenly inserted SDRAM is likely to be burned.

2. Memory shape problem: mainly refers to the memory of the height and thickness of the problem, because the use of single-sided packaging is relatively thin, some of the notebook computer in the memory slot has not reserved enough space, the result is now large-capacity high board double-sided memory installed.

3. Memory compatibility issues: This problem is particularly common for Compaq and IBM's ultra lightweight machines, even kingston;kingmax such large memory brand may be problematic, so it is best not to blindly buy, plug in memory to recognize the correct capacity is the basic requirements, If the machine can not open the black screen or beep beep error that does not have to consider, and then put the machine on standby to see whether the normal wake-up. It's best to run some memory test software (recommended Docmem) to see how stable it is.

4. Power consumption and heating problems: Many users have found their battery life shortened after upgrading their memory, and the whole machine heating up, this is mainly the newly added memory in the work of the fever, usually two memory machine than a memory of the machine heat some (two heat source), and the memory work is required to power consumption, Increasing power consumption is also normal.

5. Maximum memory support problem: the current market of notebook computer memory from a single 64M to single 256M (SDRAM). Sometimes we encounter a single 256M only recognized as 128M, which is the problem of maximum memory support, whichThe problem is related to the motherboard's chipset and the BIOS of the notebook computer, as the manufacturer's BIOS also has an impact on the maximum amount of memory, and if the manufacturer limits the maximum amount of storage in the BIOS, it is impossible to exceed this setting in any case.

6. About dedicated Memory: Dedicated memory is usually used for ultra-thin small machines, manufacturers to reduce the size of the machine design, Toshiba,sony,fujitsu and sharp and other Japanese manufacturers like to do the most. And the European and American manufacturers are very few use of dedicated memory products.

Because it is customized for a specific machine, these memory costs are high, the corresponding price is expensive, but there will be no compatibility and quality issues, before the purchase of memory, please note that your own machine is dedicated memory. The following figure is a comparison between the Sony and Toishiba machine dedicated memory and the common SODIMM memory of the notebook computer.