I had one of my regular BSOD (I'm quite sure its a RAM issue) and nothing unusual ever really comes from it, however today it screwed up my USB controller driver and now I'm perplexed as to how to get a fix for it. (Windows 7 64-bit) Windows recognises all of my 8 Universal Serial Bus (USB) Controller devices in Device Manager and upon startup it attempts to install the drivers, but fails on each one of them every time. I've tried to manually update the driver and I get the message: "Windows found driver software for your device but encountered an error while attempting to install it. Intel(R) ICH9 Family USB Universal Host Controller - 2935 The system cannot find the file specified." The file associated with each of these devices is C:\Windows\System32\drivers\usbuhci.sys I've tried countless chkdsk C: /f in CMD to no avail and my Windows 7 disc did nothing to automatically find a cure (wasn't sure how to find the driver manually from disc). I've been told that the drivers for USB controllers are downloaded through Windows Update however I have extremely limited internet bandwidth and simply cannot be downloading 300mb of updates (I searched and couldn't find anything vaguely matching the description of the driver I'm after). This is driving me a little mad and I really don't want to resort to reinstalling Windows. I've tried Aida32 to try and find out my motherboard type and it shows as unknown... Does anyone have any advice I haven't tried?