I don't think those backup CD's will help in this instance. You can do the repair using any Vista CD. If you have one lying around, borrow one from a friend or even download Vista online and burn it to a DVD, though the last option is quite a job as Vista is a significant download. When repairing Windows you don't reinstall so you don't need to relicense Windows. So you can use any Vista CD to repair. Now having said all that, if your machine came with Vista preinstalled, then it most probably has a recovery option. Usually the recovery utility let you either reinstall from scratch or do a Windows repair. I'd suggest you consult your machine's manual or Google. You'll probably find your answer there. Hope that helps a little and good luck. Amro _____ From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of ANDY COLLINS Sent: Wednesday, November 09, 2011 3:57 PM To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] Re: DLL file error Amro - thanks. This machine came with Vista pre-installed, and I don't have an installation CD. I did do a back up so have 17 restore discs, but not sure if using them will enable me to do a repair? - Andy ----- Original Message ----- From: Amro Bilal <mailto:info@xxxxxxxxxxxxx> To: access-uk@xxxxxxxxxxxxx Sent: Wednesday, November 09, 2011 2:03 PM Subject: [access-uk] Re: DLL file error Andy, if you don't get better replies then you can try doing a Windows repair. Insert your Windows CD and there should be a repair option somewhere in there. This is something I've only done once so I'm working from rusty memory but as I said if no one comes with better idea... Good luck. Amro _____ From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of ANDY COLLINS Sent: Monday, November 07, 2011 9:10 PM To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] DLL file error Everytime I boot up I am told there was an error loading... \libauthentication64\acxobplugin.dll I've just googled for it, and found something called SpeedMaxPC for fixing dll errors. Anybody use this software, and able to say if it works ok with JAWS9? Thanks - Andy