I have two 256mb RAM (512mb total) chips in my Presario v2000. It's says that I have only 384 total when I go into the system info (WinXP Home). I take out each chip and insert them back in, one at a time. When I put one in, it's says I have 224mb. The other says 224mb. So maybe I have a bad slot? I put one in the other slot, it still says 224mb. Only reason I noticed now is because I bought more RAM (512mb chip). I inserted the 512mb and one 256mb chip, it's says I have 640mb now.
Anyone know why? Do I really only have 640 or is it really 768? (Maybe it's just not displaying it correctly?) It's not the RAM or the slots, it seems to be only when BOTH slots are occupied. Please help. Thanks!
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How much memory did it have before you removed the 256Mb RAM?
If it had 756Mb RAM then the memory in the laptop has 512 Mb plus 256 Mb RAM modules, the 256Mb in the slot you can see and possibly 512Mb in a slot under the keyboard or soldered on the motherboard.
Therefore by removing the 256Mb and replacing with 1Gb memory module will give you a total of 1.5Gb
I assume the laptop had originally 256Mb RAM and you put 512Mb RAM in a the spare memory slot and you expected to see 768Mb of memory, is this correct?
Try removing the 256Mb memory module and insert the 512Mb memory module and see if the laptop boots up with 512Mb of RAM. If it doesn't boot up then the RAM is either incompatible or faulty.
Try using RAM modules from the same manufacturer.
You CAN NOT mix 100 and 133 chips! It is not good for the computer. They may let the computer work, but it won't recognize them properly. If you still want to use the new chips, try and bypass the acklowledgment. Don't know if it is possible, but it may be the only way. You should be using the correct chips.
You can go to: 4allmemory.com or cruicial.com to find out what sizes your computer is allowed.
u need 1gb Ram in total it is more than enuff for u u will never feel short after this and sure it will boost performance , u have 512 mb
if u have 2 chips of 256mb each then u need to buy 512mb X 2 chips and ur old ram will be left with u , luckily if u have 1 chip of 512 mb in ur system then u will save money like only buy 1 chip of 512mb but pls check the whole ratings of ur RAM and make of RAM is it samsung or hynix chips or what bcoz u will have compatibility issue in matching ur old and new rams pls let me know of whole specs written on RAM i can help u in matching
if u need urgent boost in performance then i will suggest replacing hard disk u will see a big change in loading OS and opening programs RAM is secondary in this stuff , but it is imp u can also go for 756 mb in total if u dont want to waste money if u have 2 chips of 256 each
secondly go for 160/250 GB 7200 RPM drive for top performance but 5400 RPM is still fast in ur notebook it is like 4200rpm according too my expertise
The T40 has two ram slots, you can put a 1g chip in each totaling 2g. If the chip will remove, then it is changeable. Vista needs a minimum of 256 to run, so, when you change BOTH chips to equal 2g it will probably read 1.744g, or it may read the full 2g. If it only reads 1g, then the second slot under keyboard may have malfunctioned. It could also be that the 256 chip is bad and your really only running 512 now. With all that said, in order to achieve 2g, you will need to put a 1g chip in each slot.