Not sure if the problem is connected but a short time after start up or restart the screen freezes. I notice that there is no hard drive action. restarting usually works OK.I had a look at the system logs & there is a string of error messages all the same - The cryptographic Services failed to initialise the Catalog Database. The ESENT error was -583.
I looked this up in Microsofts help pages but this only referred to Windows Server 2008 Event ID 257 - System Catalog Database Integrity. & repair instructions using Esentutl.
PC is a DELL T5500 OS is Windows 7 pro a second user PC from ebay
I have used Speedzooka to sort other problems - successfully! but this freezup problem persists.
The repair procedure is a bit daunting as it can involve replacing the Catroot2 folder.
I would appreciate advice please.
Fixed it! found a site that posted a link to Intel to download a driver for the hard drives controller. After reboot I was able to run updates. It is a pity the second user supplier hadn't updated the system before selling the problem would not have existed!