When start computer, operation system or application software, often because memory abnormal dell precision m4400 series laptop cpu cooling fan and lead to the operation failure. The author use the computer for many years, and summarizes some memory the reason for anomalies, and gives several processing methods, the hope can give you some reference.
 
Fault a: memory bank and motherboard slot bad contact, memory controller failure performance: open after the power supply of main screen shows "Error: Unable to ControlA20 Line" Error information system halted.
 
Means of settlement: carefully check whether the memory and slot to maintain good contact or replace memory bank.
 
Fault 2: self through. In the DOS state run applications for occupied Memory address conflict,dell studio 1535 series laptop cpu cooling fan and cause Memory allocation mistake, screen appears "Memory A11ocationError" clew.
 
Means of settlement: for Confis. Sys files use Himem. Sys, Emm386. Exe file Settings, such as Memory management Xms. Ems Memory or Settings, making the system can only use 640 KB basic Memory, the running program will appear larger "Out of Memory" (Memory) suggest that cannot operation. These phenomena belong to the soft failure, write good system configuration file config.sys after can restart your system.
 
Fault 3: Windows system applications running illegal access memory,dell studio 1537 series laptop cpu cooling fan memory resident too many applications, active window open too much, application related configuration file is not reasonable and other reasons all can lead to screen appears many relevant memory error information.
 
Means of settlement: such fault must use clear memory-resident program, reduce the active window, adjust the configuration file (INI), reshipment system and the application procedure of way to deal with.
 
Fault 4: Windows system operation DOS state of the application software (such as DOS run game software, etc.), because between software distribution, to use memory conflicts blank screen, flowers screen, crash phenomenon.
 
Solution: exit Windows system, into the DOS state, and then run applications.
 
Fault 5: the procedure has the virus, the dell studio 1555 series laptop cpu cooling fan virus program memory-resident, CMOS parameters in the size of the memory value by virus modification, will cause the memory value and memory bank actual memory size discrepancy, memory work abnormal wait for a phenomenon.
 
Solution: the antivirus software to eliminate virus; CMOS parameters in modified by the virus, the first CMOS nipple discharge, rebooting the machine, after careful examination into the CMOS various hardware parameters, properly set about memory parameter value.
 
Fault 6: computer upgrades for memory expansion, chose and motherboard incompatible memory bank.
 
Means of settlement: first upgrade motherboard BIOS,dell studio 1736 laptop cpu cooling fan see if you can solve the problem, if still no use, had to change the memory bank.



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