I have a 1 year old Alienware X51. 1TB HD and 8GB RAM with Windows 8. Windows updates failed several months ago and the usual fixes from MS failed so I had MS techs diagnose and fix it which required reinstalling Win 8 from the install disc. This fixed the problem but the same issue has returned twice and I fixed it myself both times with the same procedure. Windows update failed again 30 days ago and Win 8 will not istall from the install disc or the restore/repair disc. All driver install now fail for new devices and updated ones from Dell as well. Just hooked up a MYBOOK 2 TB HD with Win 8 drivers and it failed to install as well. My 32 GB cruzer does still work so I can do another backup of data before doing a refresh or reset to the factory image. I also have multiple backups on DVD and an Alienware respawn disc I made as well. I done command prompts(admin) for SFC/SCANNOW, DISM/Restorehealth,check disc and have ran Tweaking Windows software(full repair) to reset file permissions etc but none have fixed the problems. Driver install attempts return an error message that config registry files are corrupted. I have run registry cleaners. Tried to run repair from the restore disc. Command prompts will not run at all there and Windows automatic diagnosis and repair fail due to Windows 8 failing to load. System restore in normal Windows mode does not go back far enough to return to when updates still installed and configured correctly 30 days ago. System restore in repair mode freezes nor does it contain dates far enough back. It appears to me that I will have to reset to the original factory image and reinstall all of my additional software but prefer not to. I use my computer mostly for a home based business and to desgn & maintain web sites as well. It still functions well enough but I must get windows updates functioning again to maintain security. I use Windows Defender for virus protection and have never been infected. Updates for it's DAT files do download and install correctly. I have also scanned with Mal-WareBytes and it says the computer is clean. Any help appreciated.