My old computer I was trying to touch up starting doing odd things recently, last night any sort of keyboard I plugged in decided to not work. Other mouses and such would work, I tried all usb ports, so it isn't a dead port. Whenever plugged in I feel the cord is warm/hotter than usual?! So I decide top pop open the computer and spruce it up, dust it out, etc. Plugged it in and now it wont go past the beginning screen where it displays safe mode buttons and such. Added to that, there is also green vertical lines on the screen display. I am worried somehow my motherboard died when cleaning, or it just kicked the eventual bucket( it is an older model).