Emachines T5082 Adding 512Mb ram. Getting slot 0 installed slot 1 not installed.

It sounds like a speed issue, in the difference between the 4200 and 5300.

The max for your system is 512MB. You have two memory slots and one has a 128MB chip so if you want 512MB, you need two 256MB chips and throw away the 128MB.
At Newegg, a 256MB chip is $42+ shipping of $1. I'd consider getting a new computer instead.
I don't think memory upgrade will tax your system cooling.

Ships with
512MB DDR2 (1 × 512MB), 533MHz (PC4200)
Expandable to 2GB
2 DDR2 Slots (Total) | 1 DDR2 Slot (Available)

recommend
512MB PC2-4200 M-533D-512BD10

I assume that you've booted the computer with _ONLY_ the 512MB stick installed, and that the computer recognized it (reporting either 512MB or 384MB), i.e., the 512MB RAM is not "defective".

Hmm. 1024 minus 896 is 128.
So, the "integrated-into-the-motherboard" video-card is "stealing" 128MB of your RAM, to be used strictly for "video" purposes, leaving 896MB for Windows to use.

Now, about the "missing" 512MB of RAM.

1. If you have four slots for RAM, and they are physically arranged into two pairs of two slots, rather than four equally-spaced slots, your motherboard is capable of "dual-channel" mode. But, since your two sticks of RAM are not "matched" (size, speed), you _MUST_ insert both sticks into _ADJACENT_ slots (not slots 1/3, nor slots 2/4), in order to run your RAM in "single-channel" mode.

2. If you have two slots for RAM, interchange the two sticks, to see if that makes a difference.

Some older computers, like mine, have a maximum memory they can handle. This one happens to be 1 gig, but yours may be less. Do you have an older computer? Yup, you do. As seen here, the maximum supported ram is 256. I'm sorry. Please rate.


http://www.dealtime.com/xPF-E-Machines-eMonster-500a-EMONSTER500A

Look closely at the BOLD print

Memory Upgrade for eMachines eMachines T5082 Computer, the eMachines eMachines T5082 Computer takes the PC2-4200 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2. Memory Type, and comes installed with 512 MB (removable) of Memory. You can upgrade your eMachines eMachines T5082 Computer to up to a maximum of 2.0 GB Memory, the system has 2 sockets to install Memory, already with 512 MB (removable) standard Memory installed. For best Computer performance use the maximum amount of allowed Memory per slot for your Computer.
Choose the following Memory Upgrade for eMachines eMachines T5082 Computer.

Hello,

Located here is the actual specifications of your W3052.

http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=W%20Series&model=W3052

The DDR means "double data rate", SDRAM is "synchronous dynamic random access memory" and DIMM is for "dual inline memory module". These are the way manufacturers describe the specific speed, type, and packaging of the memory. You need to get the correct combination for your computer in order for it to function properly. The PC2100 is NOT correct, at the very least it will slow your computer down, and possibly will not work at all. You should use PC2700.

If you wish to add another 512MB taking your computer to 1GB total, then you only need 1 module, a 512MB, like the one that came in the computer. Do not purchase a 1GB module expecting it to work properly with the one already there. It probably won't. If you want to max out your computer's memory taking it to 2GB, then you will need to purchase 2 each 1GB modules, and remove the existing 512MB module.

When you go to the computer store, you ask for either "one five-hundred-twelve megabyte, PC2700, DDR, SDRAM DIMM memory module" or "two one-gigabyte, PC2700, DDR, SDRAM DIMM memory modules".

The part numbers from, Kingston, one of the major add-on memory makers are shown here:

512MB = KVR333X64C25/512
1GB = KVR333X64C25/1G

Your mobo is quite old and its chipset can only support a maximum of 512MB PER SIDE (technically called a bank) of a memory module. I would guess that your 1gb memory module has 8 chips that are all located on one side of the module, putting all of the 1 GB on one bank. Thus, only 512MB of your 1 gb RAM is detected and usable by your motherboard (the remaining 32 mb is most likely being used by your onboard video). You'll need to find a double sided 1 gb memory module (usually 8 chips on each side).

I think you are mixing ram.... Use the same make and module for your ram... when you mix ram, the problem is other ram can be difernt Voltage. some 1.9V, 1.8V, 2.0V, 2.2V to operate. If you have 1.8V and 2.0V the computer won't boot. Hope this helps.

Here is the problem, the laptop take 2GB RAM. 1GB in each slot, so get 2X1GB RAM. They are cheap now. You need 2, 1GB sticks of ram. For cheap prices go to Newegg.com

Have a nice day!