Oui ou alors tu a peut etre une alim un peut trop faible pour ta config.
Sinon essay les réglages bios suivant:
Fast Gate A20 Option : ENABLED
Video BIOS shadowing : DISABLED
Video BIOS cacheable : DISABLED
xxxxx - xxxxx Shadow : ALL DISABLED
IDE prefetch mode : ENABLED
Init Display First : AGP or PCI (SELECT YOUR CARD TYPE)
IDE HDD Block Mode : ENABLED
IDE 32-bit transfer mode : ENABLED
Assign IRQ for USB : DISABLED (UNLESS YOU USE USB DEVICES)
Assign IRQ for VGA : ENABLED
PCI/VGA palette snoop : DISABLED
PNP OS Installed : ENABLED (UNLESS YOU WANT TO MANUALLY ASSIGN IRQ's)
Resource Controlled By : AUTO (UNLESS YOU WANT TO MANUALLY ASSIGN IRQs AND DMAs)
AGP aperture size : 128 (USE 64MB IF YOU EXPERIENCE TEXTURE CORRUPTION)
AGP master 1 WS write : DISABLED***
AGP master 1 WS read : DISABLED***
Bank 0/1, 2/3 DRAM timing : TURBO***
CPU to PCI write buffer : ENABLED
Delayed Transaction : DISABLED****
DRAM speculative leadoff : ENABLED***
DRAM Data Integrity Mode : NON-ECC (UNLESS YOU HAVE ECC MEMORY)
Delay DRAM read latch : (THE LOWER, THE FASTER)***
Fast writes : DISABLED
Memory parity/ECC check : DISABLED***
Passive Release : ENABLED
PCI Concurrency : ENABLED
PCI master 0 WS write : ENABLED***
RAS active time : (THE LOWER, THE FASTER)***
RAS to CAS delay : (THE LOWER, THE FASTER)**
Read around write : ENABLED
SDRAM Bank Interleave : 4-bank/way
SDRAM CAS Latency Time : 2**
SDRAM cycle length : 2**
SDRAM Precharge control : ENABLED
Spread spectrum (modulation): DISABLED
System BIOS cacheable : DISABLED
Video RAM cacheable : DISABLED
8 bit I/O Recovery Time : 1
16 bit I/O Recovery Time : 1
Turbo frequency : ENABLED
** = ONLY IF YOUR MEMORY SUPPORT IT, OTHERWISE USE THE NEXT HIGHER VALUE
*** = WILL IMPROVE SPEED BUT DECREASES STABILITY, IF YOU HAVE PROBLEMS, CHANGE IT
**** = ENABLE IF YOU EXPERIENCE PROBLEMS WITH CREATIVE SOUND CARDS
et met l'agp en 4x.