Yes, I have the upgrade Win 10 stored on a USB stick and tried several times to upgrade
but also so that it can not be installed. It is the message. An unknown error has occurred.
but also it can not be installed. It is the message. "An unknown error has occurred."
even with my original Win7 CD does not work, the in-place repair.
the problem was probably caused by a power failure during operation.
I do not like to make New the whole system.