by qwertz123 » Tue Jul 12, 2011 8:02 pm
Hi !
I had simular problems several times before.
Mostly it was an IRQ conflict of the SCSI-PCI-controller card with other internal computer parts.
The PC ran stable for hours, but when I tried to access the SCSI-chain it locked up directly, sometimes with a bluescreen, sometimes it just froze with no reaction at all.
Try to plug the SCSI-card into another PCI-Slot on the mainboard, or to deactivate other computer components, that are not needed/ not used via the PC-BIOS.
You have to know what you are doing then should be added, never switch off anything that is unknown, it might have fatal results.
You can check the IRQ-usage of your PC at bootup, often your bios shows a message there which components are listed and the IRQ-channels they do use.
There are also several PC-tools that show the IRQ-setup like sysoft sandra or everest home, these are older programs, I do not know the new tools here.
There is also a function in windows to view your configuration
Start - Programs - Accessories - System Tools - System Information - Hardware Resources - IRQ
I did mostly have real problems and freezes, when the SCSI-card used the same IRQ as the graphic-card, or if it used the same IRQ then the IDE or S-ATA controller.
Also sharing IRQ with USB port is problematic most times.
Some BIOS have the option to change which IRQ-channel is given to which PCI-slot / IRQ asssignment. You have to look into the manual for detailed information here.
The PCI-slot directly next to the graphic card often shares the IRQ with the graphic adapter, no matter if is AGP or PCI-express.
So my tip is not to use this !
Freezes can also appear if the SCSI-bus is not terminated correctly, sometimes you have to use an active terminator plug at the end of the last SCSI-port.
Hope it helps, Volker