Dell latitude c640 , i just installed 2- 512 meg memory sticks on my dell c640 . i have win xp pro installed. after boot up , i go to system info, system summary, it shows total physical mem at 1024mb, but available physical mem only shows 375mb. How can i get the system to make all mem available. I already went into bios and did not see a option to change any value for memory. Maybe i missed something. Can u please help
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Re: dell laptop memory install
Available physical memmory is what all your programs on your comp is using like windows virus software drivers im thinking you probably have spyware or bugs in your comp that could be bringing memmory down
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Here are the max memory and speeds: Lat C640 is Max 512M per stick DDR-266 (PC2100) or DDR333 ( PC2700 ) for a total of 1024 Meg
Lat D520 is either 2 or 4 Meg total. DDR2-667 ( PC2-5300 ) Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules.Maximum memory for systems with the Intel 945GM chipset is 4096MB, maximum memory with the Intel 940GML chipset is 2048MB Lat D430 has only slot with a Max of 1 Meg. You can use DDR2-667 (PC2-5300) or DDR2-533 (PC2-4200)
Lat D420 is a max of 1.5G . Use 1GB DDR2-533 (PC2-4200)
Inspiron 2200 is one slot with a max of 1280 Meg. recomended is 1GB DDR-333 (PC2700)
Here is a link to find almost any memory you need: http://www.crucial.com/index.aspx
NOTE: When mixed speeds in the same PC, the memory will run at the slowest speed installed or the highest speed allowed by your system, whichever is slower.
hi, i have dell c400 laptop, its to much simple to install xp first you just take out hdd from laptop plug in tht hdd in desktop pc by external usb box now u just start windows 98 setup in it when it started first format ur drive then install it when windows 98 setup files copies to 100%. machine need to restart u just plug out the hdd and plug in back to laptop now the setup will remain start in ur laptop and when the installation complete u just upgrade ur windows from 98 to xp by intalling xp from external drive on OPERATING SYSTEM OF 98 WINDOWS NOW WAT U SAY??? ITS TO MUCH SIMPLE just try once
Well, I'm amazed a C640 runs Vista at all.
There's no reason to buy a new hard drive, except for the novenlty of having one loaded with Vista on a C640.
It's a great laptop, and runs Windows XP PRo perfectly well.
If you have one od the Dell XP install disks, just boot from it, and whenever it finds the vista install, hit excape, then at the next screen hit "D" to delete the partition, then choose "quick format", and load the Operation system.
If you need an install disk,let me know.