Hi All, Some assistance would greatly be appreciated. I have had this Toshiba Satillite laptop for a year that is very rarely utilized except for work on those rare instances when I must travel. The OS is Windows Vista Home Premium. The last time I used the laptop I had no issues. I tried to fire it up the other day with no success. Upon start up the toshiba screen apears and it's down hill from there. I get the following system message: C:\WINDOWS\SYSTEM32\LOGONUI.EXE The NTVDM CPU has encountered an ILLEGAL INSTRUCTION CS:119b IP:0100 OP:ff fe3c 00 54 Choose "Close" to terminate the application. I also get a little dos window with C:\WINDOWS\SYSTEM32\LOGONUI.EXE in the title bar. I can think of nothing unusual or any issues that would create this problem. The machine refuses to boot from this point. I have selected both close and ignore only to find myself at a black screen. The results are the same in safe mode. I have to contact Toshiba to request a restore/reinstall disk as it did not come with one. Any assistance that can be provided would be greatly appreciated. Thanks!