I don't think it is bad ram. More likely it is the often reported problem
of a BSOD when all four memory slots have 1GB dimms. It is a known issue
with nVidia chipsets on some boards and there is a patch. It can also be
due to memory voltage settings. The stock settings in the BIOS can
sometimes be reduced slightly to resolve the issue. He should check the
forums on the mobo manufacturer's website to get some tips.

"SimRacer" wrote in message
...
If it only gives you the blue screen with 4 in and works fine with 3 in
then
its most likely bad ram. You can download a Memtest and burn that to disk
and
run the program. Its a DOS based program so your system needs to be set to
boot from cd as first boot device. Test the memory one at a time to find
out
if any of it is bad.

http://www.memtest.org/

Thats the link to memtest, its free and a much better testing program then
Microsofts memory tester. Run the test and let it repeat at least a couple
of
times.

"andy6432668" wrote:


I got a dell inspiron 531 came with 2 gigs of memory running vista 64
bit. I installed 2 gigs total of 4 gigs got b.s.o.d. upon startup so I
startup in safe mode there it shows 4 gigs tried again to boot in normal
desktop same bsod. I removed 1 stick leaving 3 gigs now boots and runs
fine what's up with vista and 4 gigs of ram ?


--
andy6432668