Gateway mfatxstl elp 500c. MEMORY PROBLEM

Gateway El2 500c Drivers Mfatxstl 500c Downloads ,this might help you.

Try opening the case and "reseating" the RAM (memory). Remove all memory and try to boot. If that works, shut down and add a RAM chip into RAM Slot 1 and try to boot. If that works, add another chip, and so on. It is not impossible for 1 RAM chip to be fried. Also, if you have more than one hard drive hooked up to the PC, try booting with only the boot drive (OS drive). If that works, maybe a slave drive is fried. Good luck.

Standard Memory 256 MB (removable) Maximum Memory 512 MB Memory Expansion 2 sockets Memory Comments PC100/133 SDRAM DIMMs

Here is your model info
Model: 500L LTD
Serial #: 0025714070
Ship Date: December 2001
Warranty Info: EXPIRED
You can get driver and restore disk files from the webmaster at mpcdrivers.com

Looks like a 478. I pulled one comment from a person using a 1.7GHz and a review gives a 2.6GHz. A 478 seems logical without taking off the heatsink. I don't believe anyone makes a dual-core 478.
http://www.geeks.com/products.asp?cat=cpu

These guys seem to have a fair amount of 478s available, just have to know the specs on the buss (400,533,800).

That last RAM probably is good. Many motherboards have problems using many different memory. All of the memory you have should be at least identical to ensure that they work. When RAM run at different speed or require a little more voltage, they will not let your motherboard boot. You can try mixing up the order you put the RAM in. Try putting the last RAM in the first slot by itself, the motherboard should boot. Then try the rest.

Also, whenever you add or change hardwares, you should clear the CMOS/BIOS settings.

Easiest way is to unplug power from PC and pul out memory stick.

Alternatively you can download / install an awesome utility called
CPU-Z and go to memory tab to ID type of ram.

have you tried increasing the swap file on your computer?

I think that motherboard is actually an Intel D865GLC; there's lots of info available on the intel site. Here's the manual: (http://www.intel.com/support/motherboards/desktop/d865glc/sb/cs-008973.htm).
Look at the manual and see if it matches up. If it is a D865, it looks like it uses DDR memory, up to 3 or 4 GB (4 slots)

Max memory is 2GB, i.e. 1GB per slot(DIMM), so you will need 2 X (SimpleTech 1 GB PC3200 400MHz DDR RAM). {Always use matched pairs only}
Visit this link : http://www.simpletech.com/upgrades/gateway/700x/700xddrintelp428ghz/
.................sodeep