Uh, hello everybody, this is my first post as I'm quite new to the forum. Where to start... I have an Acer Z1620, bought about 5 months ago. I really have no idea when, how or why this started, I just know that I wanted to get rid of Windows 8 and now I want it back like a fool. I am aware of every single configuration you must deal with when entering UEFI/BIOS as Windows 7 is unbootable, if values are set to default, so my (now) BIOS is set like this: Authentication (Secure Boot) - Disabled Launch CSM - Always Boot Menu (unbelievable, it was disabled) - Enabled all of this just to boot Windows 7's installation -.- anyway, I ran Windows 7 happily for like 2 months, but as I'm sorta a crazy person, I decided to return to Windows 8 because, overall, it's faster and it manages to give a bettter use of system resources, forces my hard drive to adopt GPT style and such. So, I used Daz's Windows Loader 2.2.1 to activate Windows 7 and everything worked just fine, the OS I missed so much was back. But then again, I wanted to return to Windows 8, activation wasn't a problem obviously, as the serial is, somehow, provided by the BIOS. I had much earlier created a system factory image by using Acer Recovery, and then used a 32 GB flash stick to restore my PC to its default OEM operating system. In short, when I ran Windows Update, all of the updates (if not mostly) came up with Errors, they like wouldn't even attempt to install, they like would get skipped: 1 to 2, 2 to 8, 8 to 50 and so on... so I checked the updates history and, to my surprise, A LOT OF UPDATES INSTALLED WITH ERRORS. I couldn't believe it, this' never happened to me before, and hell I've jumped from Windows 8 to Windows 7 and from Windows 7 to Windows 8 many times, but now that I last 2 months this happens, it's the most unsatisfying thing ever, I was so decided to return to Windows 8, cause Windows 7 didn't end up satisfying me with its performance. Can anyone please give an idea why this is happening, I'm really freaking out here. Thank you very much in advance.