Hi, I currently own a custom Lenovo Ideapad Y480 that I purchased about a month ago. Just recently my laptop shut off (like the power was cut) and then restarted. Shortly after restart, it happened again. And again. So I shut it off and waited a while. I started it back up, and everything seemed fine, until about 20 minutes in, it shut off again. More recently, the computer started shutting off and restarting immediately after the initial startup screen, and then froze, with frozen static (horrizontal lines, to be specific). I attempted a "repair windows", but it froze while loading files. I found advice about unplugging the battery, and it looked liked it worked until a few hours in, when it shut off again. I have run scans and restored to previous dates, but nothing fixed it. The computer seems perfectly fine except for what is happening; it runs smoothly and there are no corruptions. It seems to happen regardless of the laptop being plugged in. I also performed diagnostics on the memory and nothing came up, and the same for Event Viewer, except for a Kernel Power error about the system shutting off inproperly.
My system specs are: Windows 7 64-bit Home Premium edition, 750gb Hard Drive, 16gb RAM, Intel HD Graphics 4000, Intel Core i7-3610QM CPU @ 2.3ghz.
I have searched all over for a similar problem in hope of at least a diagnosis, but I have come up short. If someone else has had this problem and posted it on here, I apologize, but I couldn't find it. If anyone may have an idea as to what is going on, I would appreciate some help! Thank you!