use the restore media you created before you installed Win 10
I decided to format my custom computer after 4 years I had used it but now it countinuosly crashs.
One month ago I upgraded my Windows 7 system to the new one windows 10. After that I decided to go back to windows 7 ultimate and I do it not downgrading but by formatting and re-installing the windows 7 utimate operating system.
After that, I'm having a lot of problems when I download or open some programs (like skype, chrome,steam, Origin) or also trying to intall windows upgrades.
I tried changing the windows installer, or doing a reset of the CMOS of both of the BIOSs. I trying also switching the RAMs and also disconnecting the hard disks where wasn't istelled the OS. Also, I tried installing the OS into a different hard disk than the ssd but nothing changed.
Yesterday night i had to repair a windows service (the group policy client services) by using regedit.
what else can be done??
I don't know if it is a hardware or a software problem, I only know it was working until the format
Thank you in advance!