Hi, I just re-installed my OS on a Dell T5400 (Nlited version with no major removal, only added update pack and drivers), everything ran smooth during the first starts but after installing few missing updates, small apps and .net framework I'm facing a strange issue: When it starts, the computer pauses for a long time before and especially after the logon screen at "applying computer settings". More embarassing, the shell is missing, meaning I have no taskbar, desktop icons, etc.. Even after a long wait, nothing happens. I checked right after startup the processes list and I can see explorer.exe running. If I stop and re-start it, nothing happens. After looking here and on internet, found similar issues but always linked to malware presence. I cannot say for sure I'm not infected but it seems difficult.. the OS is freshly installed and I'm on a company network. If you need any more information do not hesitate to ask. Thank you for your help. Til