Toshiba A665-11Z Screen GlitchWatch this video on YouTube This is a 5 year old Toshiba A665-11Z with an i7 740qm and a GTS 350m. I had given it up for dead a couple of years ago as it kept doing this screen glitch like you see in the video above. This glitch would occur only a few minutes after turning the machine on and when doing something more taxing. Recently I decided I wanted to have one last go at repairing it before splashing out for an expensive new machine as even by today's standards the specs are decent for general use. Knowing it always used to run so hot I took it apart to access the fan and heatsink. There was a fair amount of crap to remove but more importantly the thermal paste appeared to have been applied by a blind man and had also degraded somewhat over the last 5 years. I remove the heatsink and cleaned everything off, applied new paste and put everything back together including any ribbon cables I had removed. Now it worked perfectly for extended periods with the temperatures being around 25-30% lower than before. The laptop was nice and fast still so I ordered a 500GB SSD and, in the video above, you can see me cloning my disk. Halfway through the procedure the glitch came back with a vengeance. This really has me stumped as clearly whatever I did before temporarily fixed it. It's hard to imagine it's a failing component if I had temporarily repaired it before, although I realise there can't be many possibilities! Any clues? Gfx chip or processor or something else?