Samsung Q45c Laptop User Manual


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Other
Q
4GB memory is not recognized by Windows
correctly.
A Thisisduetoalimitationin32bitoperating
systemsthatexistsinnotebookcomputersof
othermanufacturers.Althoughtheaddressspace
ofthe32bitoperatingsystemis2³²=4294967296
=4,096MB=4GB,allofitcannotbeallocated
tomemory,assomeofitneedstobeusedfor
otherpurposesbytheoperatingsystem.Because
approximately1GBofaddressspaceneedstobe
allocatedtoothersystemresourcessuchasthe
BIOS,PCIDevice,andVGAforaPCtooperate
normally.Therefore,evenif4GBofphysicalmemory
isinstalled,theaddressspaceallocatedtomemory
islimitedtoapproximately3GB.
Althoughuserscanupgradetheirmemoryto3or
4GB,only3GBisrecognizedevenwhen4GBof
memoryisinstalled,andamemoryupgradeto4GB
is not recommended.
Q
The User Controls window appears when
installing or running a program in Windows Vista.
A Inthiscase,click
Allow(orOK)toinstallorrun
theprogram.However,ifyoudonothavean
administratoraccount,youhavetoenterthe
administratorpasswordintheUserControlswindow
andthenclickAllow(orOK).Ifnoadministrator
passwordissetyoucanclickAllow(orOK)without
entering a password.
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