Hi, below is my computer specification:
ATHLON XP 1600+
DDR 128 Samsung Chip (Old)
DDR 128 Infineon Chip (New)
GF2 MX400 32MB
Quantum Fireball 15lct
Asus 52x (Pri Master) + Teac 32 (Sec Master)
Using CheepoBios version 1129
Memory set at Ultra 2-6-2T (works really stable)
Clock set at 133/133 (no overclocking)
I experienced a very wierd problem yesterday. Recently, I bought a new DDR stick (which is the DDR with the Infenion chip). I placed the new DDR stick at bank 1 (the farther slot from CPU). I turn on my PC, everything work well, POST detects 262144KB. I restart my computer, then problem occurs, POST detects 131072KB only at bank 1). I thought my DDR slot was dirty, so I turn off my computer, cleaning the bank 0 slot, and turn it on again, POST says 262144KB, then I re-boot again, like before, POST only detects 131072KB. I tried this several times. Problem occur at 2nd,4th,... boot. 1st,3rd,5th... is normal. Then I remove the new DDR stick from bank 1, everything work back to normal, POST detects 131072KB at bank 0, even if I turn on or re-boot my computer, everything is normal. So I conclude my bank 0 slot and my old DDR stick is good. I placed the new DDR back to bank 1, and the problem appears again.
The same when I turn on my computer, POST detects 262144KB, I press del to enter BIOS menu, when BIOS menu appears, I reset my computer, POST detects 131072KB, I press del again, then I reset, POST detects back to 262144KB, I press del, then reset, POST detects 131072 and so on.... back and forth from 262144KB to 131072KB.
Then I switch the new DDR stick to bank 0, and the old one to bank 1. The problem dissapear. Even if I turn-on or re-boot, POST always detects 262144KB memory avaiable on my system.
So, what's going on here? Is this a BIOS bug? Or maybe even a motherboard bug? Can someone tell me what's going on? I really really courious about this.
Thanks for your answers...