A few days ago my PC startup routine suddenly changed. Normally I power up, the PC goes through it's boot routine and my desktop activates. Now, A picture appears, asks me do I like what i see ( I don't) and I then have to click out of that and put in my password before I can proceed.
Along with this change the PC now shuts down if idle for 30 minutes or so.
I have tried to go back via System Restore only to find I no longer have any restore points. They have just disappeared.
I have also juggled with the power options to see if I can fix the powering down problem but can't change it.
Does anyone have any ideas as to what has happened.
Any suggestions greatly appreciated.