PC restarting a lot/application errors

[CaptainY]

Hi, I recently put together a machine with P4P800 deluxe board, P4 2.8 ghz processor, 2x256 Kingston KVR400X64C3AK2/512 PC3200 DDR ram, Geforce 2 MX400, WD 80 gig 7200 RPM master drive, and all on a 400 watt Antec power supply. Ever since I put it together, Win XP pro has been restarting quite a bit, as much as 3 times in 10 minutes, and as few as once a day. Most of the time, it involves an IE error. I would be browsing the web, and suddenly I would get an error message saying explorer has to close, and sometime (a few minutes) afterwards the computer would restart. I have also experienced application errors with AIM, and My Pictures screen saver. I have a strong belief that it is memory related since when I run a single module it is perfectly fine. I have tried manually adjusting the memory timings in the bios, only to no avail. I have also run memtest86 at least 10 times, each time for at least 3 hours, and only once did it come out with errors, and that was on test 5 and 8 while running in dual channel mode. The other times I was running dual channel I received no errors, but the computer still restarted. So far the only thing that works is one DIMM at a time, which causes me no problems. I would like to know if this a ram or a motherboard problem, and if anyone has any suggestions for me I would appreciate it very much.

 

[skullshivers]

is your memory ECC?

your board wont support it if it is

 

[CaptainY]

It is most definitely not ECC

 

[Viper96720]

What kind of errors does event viewer report if any?

 

[Twista]

Anything overclocked?

 

[nick1985]

temps?

 

[CaptainY]

For error reports in the event viewer, I'll have to check when I'm back at my computer, but its something like "faulting module internet explorer at address __________" and in the system error log I get a save dump error with something like "the system has rebooted from a bugcheck......." I can be more specific if need be. As for overclocking, nothing is overclocked. And as for temperatures, nothing hardly ever goes above 40 celsius. Its wierd because one piece of ram in there works perfectly fine, but 2 sticks of ram in dual channel is bad news.

 

[waylman]

so you have a bad stick of RAM. RMA it for a new stick.
memtest86 is a good test for your memory.

 

[jacktesterson]

memory problems I'd say

 

[CaptainY]

Alright, I believe I will return the ram, but before I do, what kind of ram should I get in return, i.e. what kind of DDR400 ram is best for the P4P800 deluxe with a P4 2.8? I would prefer to get dual channel 512 mb total, or 1 stick of 512.