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PC. , Windows 7. , , RAM. Gigabyte GA-M55S-S3 (rev. 2.0) 2x1GB Kingston ( verified - KVR800D2N5/1G). 2 KVR800D2N5/512. Google, upgrade- BIOS-a. , beta, . Upgrade- OS- . updates, PC- . , beep boot ( ). , PC- .
, , . .. , . , .. , . , . downgrade- BIOS-, stable , M55SS32.FI. Optimized Defaults, Device Boot Priority. , update- OS-a, , , etc - . . cold boot short beep, POST, , -. POST- , beep boot, . beep , .
pdf- :
AWARD BIOS Beep Codes
1 short: System boots successfully
2 short: CMOS setting error
1 long 1 short: DRAM or M/B error
1 long 2 short: Monitor or display card error
1 long 3 short: Keyboard error
1 long 9 short: BIOS ROM error
Continuous long beeps: DRAM error
Continuous short beeps: Power error

. google , beep DRAM refresh failure, , . , , .., . system fan, BIOS- FAN failures, .
beep POST .

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