Computer locks up at 133/266MHz FSB

[MaTTCNA]

This is a really weird problem. This is how it goes. I got all my parts for my computer, assembled them, checked all the jumpers (Except the one to change the FSB), booted up, checked the BIOS, and loaded Windows. Everything worked okay. I noticed that i was only running at 100/200MHz FSB, so I set the jumper for 133/266MHz FSB. The computer booted and ran fine until I started to play Grand Theft Auto 3. About a minute into the game my computer would just lock up. I thought maybe my computer couldn't handle GTA3, so I played some Quake 3. The same thing happened. They would both run at 100/200MHz FSB, but not at 133/266 MHz FSB. I looked into it and found someone with a similar problem. They said that if they take out one of their DDR DIMMs their computer would run at 133/266FSB perfectly. I tried it and it worked for me too, but it wasn't the kind of solution I was looking for. It would really be nice to be able to use both sticks of memory. Anybody care to share their much needed insight?
This is my setup: CPU: AMD Athlon XP 1800+
MB: EPoX EP-8K7A+ (RAID)
RAM: 2 x 256MB PC-2100 DDR
VGA: VisionTek GeForce4 Ti4200 128MB
HDDrive: Maxtor 60GB 7200RPM
Sound: SoundBlaster Live 5.1
O/S: Windows XP Pro

 

[Bovinicus]

I would suggest verifying all of your CMOS settings. Set them to fail-safe defaults, then adjust the ones that are most important (Proper FSB, Mem timings to SPD, etc.) Also, update all driver to their latest versions. Then, update Windows XP to the fullest (SP1 definitely). If you still suffer from problems, I suggest you try using Memtest86 (www.memtest86.com). It will tell you if your memory is having problems, or if it perhaps motherboard related. Also, try switching the DIMMs. See if it is a problem running 2 DIMMs at once, or if one DIMM in particular is the problem. If so, just RMA it.