Replacing the processor on Dimension 3000

Are you kidding? That model is a boat anchor now!

Hello Sir. your PC3200 DDR (PC400) is not compatible with the dimension 3000, get a PC2700 (PC333) instead. or upgrade your motherboard to use a PC3200. BTW 2GB on an XP is too much memory. Use Vista, your processor lags. Its wiser to upgrade your motherboard and processor.

A tool-free side panel slides open easily to reveal a roomy interior with two free PCI slots. ... The Dell Dimension 3000 is an affordable computer designed to handle essential multimedia demands for the home user. The Dimension 3000 comes with the latest processor and memory technology, and won't break your budget.

The best MB for that chassis that will fit without any Modification is a Dimension 8400/PWS370 Dell Motherboard. The chassis power button/USB connection is a proprietary Dell connector and using any 3rd party MB will require modification and the wiring is almost impossible to find for that control board.

For just about the same cost (MB, Processor, Heatsink/Fan and RAM) you can buy a New Vostro 220 with a Core 2 Duo processor w/3GB RAM and a 320 GB HDD and it is under warranty

Dell has a really good support site. You log on, enter your service tag number (on the top of side of your PC) and they will tell you exactly how much ram you support, the type of ram needed and how many slots it has. If it was a matching pair then it should be working, unseat it and reseat it, it may not be in all the way. If still don't show then put it back in the old computer and see if it reads it. If not then the RAM stick got damaged during the move. But no doubt you should be able to handle more that 1GB of RAM. Good Luck, let me know if you have any questions.
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By the time you spend all that money you could have bought you a new Intel 2.8Ghz dual core processor with 4GB of RAM..keep the one you have for stuff you want to experiment with and buy yourself a new computer

Is the video card built into the motherboard? If not you can try replacing just the video card to see if that works. Otherwise I am afraid you may have to replace the motherboard.

well when u upgraded did u format the hard drive u have to do that

If you replace with the same motherboard that's in already, that would be easiest for you.

But if you use a different one, you'll have to re-activate Windows, and download and install new device drivers.

your motherboard chipset is Intel 865GV and it supports Pentium 4