Hello, I thank again the people who helped me before. I recently bought this net-book: http://us.acer.com/ac/en/US/content/model/NU.SGPAA.019 .I got it for my dad, but since he is a complete stranger to Windows 8, I figured I COULD install Windows 7 with no problem, (windows 7 x64 by the way). But ohh I was wrong, so wrong; extreme lag? check, random BSODs?, check, windows updates with random errors?, check, and other series of scary things. So well, I decided to RE-INSTALL windows 8 which was pretty logic since the net-book had that system from the beginning, but again I was wrong. Everything went smooth, and then BANG!, the net-book restarted to complete the install process, and then an IRQL_NOT_LESS_OR_EQUAL error stops me dead from using my net-book ever again. I read that this was supposed to be a driver or a program issue, but I deleted all partitions, and gave the HDD format, cleaning EVERYTHING inside, so I'm very confused. I tried all again but I still get the error. As you can see all this is a very bad omen for the future of this netbook. So I humbly ask if anyone could give me a piece of advice as to how to continue, I'm practically scratching my head now like a monkey. I appreciate any reply in advance.