Hi Jean, Do you happen to know what Service Pack of Windows XP you have installed on each machine? I can't be 100% certain, but there have been some reports of XP SP3 causing a few problems. In fact, I'm currently trying to troubleshoot a problem with serial communications, and assume this is how you might have Alva connected. Sorry to be asking so many questions, but de-bugging such issues can be a long haul. George. From: duxuser-bounce@xxxxxxxxxxxxx [mailto:duxuser-bounce@xxxxxxxxxxxxx] On Behalf Of Jean Menzies Sent: 13 September 2008 16:06 To: duxuser@xxxxxxxxxxxxx Subject: [duxuser] Re: computer locking up Hi George, I believe it's the whole computer that freezes. These are the key combos I've tried: Jaws stops talking, whatever is on the braille display stays up, alt-tab doesn't work, alt-F4 doesn't work, alt-control-delete doesn't work. I can't seem to do anything, and then have to push the power button to reboot the PC. Jean ________________________________ From: duxuser-bounce@xxxxxxxxxxxxx [mailto:duxuser-bounce@xxxxxxxxxxxxx] On Behalf Of George Bell Sent: Saturday, September 13, 2008 4:38 AM To: duxuser@xxxxxxxxxxxxx Subject: [duxuser] Re: computer locking up Hi Jean, Does the whole computer freeze up, or just the DBT application? My first port of call would be the Application section of the Event Viewer, but that's perhaps a rather technical area, unless you have a local system administrator who could help. I've some ideas after that, but again a system administrator's help would be required. George. From: duxuser-bounce@xxxxxxxxxxxxx [mailto:duxuser-bounce@xxxxxxxxxxxxx] On Behalf Of Jean Menzies Sent: 13 September 2008 00:38 To: duxuser@xxxxxxxxxxxxx Subject: [duxuser] computer locking up At work I have DBT 10.7 and Jaws 7 Professional, running on an XP Pro operating system. Everytime I open or create a file and translate to a DXB file, and then use alt-9 to have Jaws read the cursor position, the computer freezes. There is also an Alva braille display hooked up. At home I have various versions of Jaws standard and XP Home. I've tried to duplicate the same scenario with Jaws 7, 8 and 9 using DBT 10.7 but everything works fine here. This at least tells me that it should work at work. Can anyone suggest how to troubleshoot this problem? Thanks. Jean