|If the ram tests okay.....|
" the Dell screen and the xp screen are fine but whe it goes to the next stage the screen looks like the opening screen from the Matrix."
"I guess I'm a little older than you because I don't know what the opening screen from Matrix looks like"
"Matrix screen vertical lines, it looks like numbers and letter in the line going from top to bottom very fast and random rectangels moving around the screen."
That's called video "artifacts" - random video corruption.
If you are using the onboard video on this mboard, if that's still there after the ram tests fine, the new or the old ram, your onboard video is probably fried.
If you are using a PCI video card in a slot, remove or switch off the AC power to the computer, and try re-seating the video card. If it has a fan and heatsink on it, clean those if they have mung (dust, lint, etc.) on them ( DO NOT use a vaccuum cleaner ! ), and restore power and make sure the video fan spins okay - if it doesn't, the video chipset may be fried.
Video adapters have two modes - a basic "VGA like" mode, that needs no drivers, and an "enhanced" mode, that is loaded in Windows once you load the specific drivers for the video in Windows.
It could be the video drivers are corrupted in Windows, but you usually do NOT get random video corruption as bad as you're describing unless the video adapter is damaged (or you're having ram errors). Sometimes the video adapter works fine in the basic "VGA like" mode, but not in Windows in the "enhanced" mode.
How to check if the problem is the video drivers in Windows are corrupted.
Remove any bootable disks.
Press F8 repeatedly while booting the computer, select Enable VGA mode from the boot choices menu.
If the desktop loads, and the video's fine, try un-installing the video drivers, in Add/Remove Programs, then installing them again.(Sometimes you can't do that in Safe mode).
Boot normally - if your video's still screwed up in Windows, if you have no ram errors, with the new or the old ram, then the video adapter is fried.
If you installed a PCI video card in a slot,
I've looked up this model before.....
Dell? Dimension? 2400 Series
It's a minitower and has onboard AGP graphics - you have only 3 PCI slots, max, no AGP slot.
Your power supply has either a 200 watt or 250 watt capacity.
Typically minimally sized, as is the case with most brand name systems.
I looked it up - It is not proprietary - it's a standard (PS/2) sized ATX power supply.
Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.
If you use a cheap PCI video card with an older video chipset you MIGHT be able to get away with not having to up the capacity of the power supply, but if you use a better PCI card with a more recent chipset you WILL have to get a power supply with more capacity, a minumum of 300 watts, or more.
Your power supply must have at least the minumum capacity required to support a system with the graphics card you are using installed, or the max graphics card you might install in the future.
(Onboard video - video built into the mboard - IS NOT A CARD!)
You can go to the video card maker's web site and look up the specs for the model - often under system requirements - the minimum PS wattage, and, more important, the minimum amperage the PS must supply at 12v is stated. If you don't find that, any card with the same video chipset including any letters after the model number has very similar minimum PS requirements. Some power supplies have two or more +12v ratings - in that case, add those ratings to determine the total +12v current capacity.
Don't buy an el-cheapo PS.
See response 3 in this:
Check your present PS. If it's votage(s) are out of whack, that in theory could cause your video problems.
See response 4 in this:
The guy in this Topic says the onboard video is still enabled when you install a PCI card in a slot, on the Dimension 2400: