Windows 7: Using x64, SCSI driver only supports x86

Hi,

I am trying to install drivers for an Adaptec AHA-2940 SCSI card.

The adaptec website there is no 64 bit version available, but i have been reading around for solutions with no success.

I need the "Adaptec AIC-7870 PCI SCSI Controller" ... but there is no 64 bit version for that. When i try to install the drivers (there is no installer program, i just need to use the update drivers feature of windows) it says that it is not a 64 bit version so i can't use it.

Is there any solution to my problem?

Hello,
Please state your exact Adaptec scsi card info. What is the ID number on the card? Exactly, what card do you have? What is the firmware version currently showing on card. (boot into scsi utility to get some version info) Have you ever changed/upgraded the firmware on this card? When was this card manufactured? What scsi drives are you using? Ultra320 scsi? 160 scsi?

It appears you're trying to make the AIC-7870 PCI SCSI Controller act as an "emulated" drive, for 64 bit, on the 2940. Why?

You are on Windows 7 now? Was your card running on Vista x64 with x64 drivers? Did you upgrade to Windows 7 or clean install Windows 7?

Are you saying x64 drivers you have don't work with Windows 7?

Did you try this advice & NOT find x64 driver?
"in device manager, select the SCSI adapter, click "Update driver", "Browse my computer for driver software", "let me pick from a list of device drivers on my computer", uncheck "show compatible hardware", and select "Adaptec" as Manufacturer and "Adaptec AIC-7870 PCI SCSI Controller (emulated)"

With more info, I may be able to help you.

It's the Adaptec AHA-2490. I haven't changed the firmware on this card. I am using a HP 6300 scanner with the card, connected through SCSI. (The usb port on it is broken and has not worked for years)

I was previously Windows XP x86, and now I'm using Windows 7 x64. I did a clean install.

There are no x64 drivers for this card full-stop.

I was trying the AIC-7870 driver because i read somewhere its compatible with the 2940, but I can't find it in the windows 7 driver bank either.

I read somewhere else that the xp 64 driver would be accepted but I can't find any, after a long time searching.

Is there a way to force the windows xp 32-bit drivers to load and hopefully work?


Edit: I also have tried selecting that driver, but it doesnt come up in my list of drivers when i follow those steps.

If you can find someone with a Vista x64 system there is an "Adaptec AIC-7870 PCI SCSI Controller (Emulated)" driver in the Driver Store on that system that will work with Windows 7. For some reason, that driver was dropped from the in-box drivers in Windows 7.

It is located in the C:\Windows\System32\DriverStore\FileRepository\djsvs.inf_6451fbc2 folder. Copy that djsvs.inf_6451fbc2 folder to your Windows 7 computer.

To install it, go to Device Manager, select your SCSI adapter, right click and choose Update Driver Software. In the Window that appears choose "Browse my computer for driver software". In the next window, enter the location of the djsvs.inf_6451fbc2 folder on your computer, then click Next. You will get warnings about the drive being unsigned and that it may not work. Say yes, you really do want to install the driver -- it will work.

I tried as suggested on a 2940U/UW on a clean install of Window 7 64-bit with no joy. Windows 7 says cannot start (code 10). Any one else had success or other suggestions?
(P.S. Also tried the modification of taking out the NTx86 information on two lines of the .inf file suggested on Microsoft Technet, but that didn't work either.)