1GB ram now showing only 512MB

Could be a bad seat or you may have had a stick go bad entirely.

If there are two, try removing one, then swapping them and make sure they both work fine individually. Then try both again.

umm, i moved it to the other slot, but still shows that same thing

check your bios to see shared memory!

iphone said:

check your bios to see shared memory!

umm how should i do that?

kucing13 said:

when bios screen splash at the startup.depend on your MOBO. F10 i reckon. go to advanced chip settings

p/s: I'll appreciate it if you fill your system specs.

umm how do i get the sysytem specs? anyway, the RAM WAS WORKING PERFECTLY BEFORE ON WINDOWS ON WINDOWS 7

I am having this same problem.I recently switched from windows 7 ultimate x64 to windows 7 ultimate x32 bit . I have 4 GB RAM usable, now it shows only 3GB as being usable...( in 32 bit windows...)

redblade8 said:

I am having this same problem.I recently switched from windows 7 ultimate x64 to windows 7 ultimate x32 bit . I have 4 GB RAM usable, now it shows only 3GB as being usable...( in 32 bit windows...)

umm i think windows 7 32-bit supports only 2GB of ram??