D-brackets and RAM

[Homestar425]

I recently upgraded my RAM on my computer from a single 256mb stick, to a single 512 stick. I have a MSI board with a D-bracket, and the leds tell me that either the RAM hasn't been installed properly, or the module is dead. I have installed RAM before, and everything looks fine... so am I screwed, or is there anything I can do to save my RAM with out having to buy another module -___-

If you need my system specs, they are as follows:
KT3 Ultra2 (MS-6380E) ATX Mainboard
AMD Athalon XP 2000+ (1.66 ghz)
ATI Radeon 9250 128mb (built by Sapphire)
PC2700/DDR333 512mb RAM (do not know of brand)
15GB HD (again, don't know brand, but it was the stock HD)

RAM should be the simplest upgrade to do, but why must this RAM be so stubborn?! :hotouch:

 

[vnf4ultra]

Have you switched back to the 256mb? Does it work then? If so, you probably got a dud ram stick, most ram has a lifetime warranty, so you could be in luck...

 

[Homestar425]

Yes, the 256mb works. I don't know about the warranty because I bought it off eBay. I'll check the auction... hopefully the eBay-store I bought it from has a warranty. Thanks for the help.