Let's start. This is an Acer aspire 5541g laptop (pretty old one). When the power button is pressed the light turns on, but I get completely black screen (no logo, nothing) and it stays like that. If left running like this it starts to heat up(I have no idea why). I came to the conclusion its a faulty GPU, so I took advantage of that heating up ^ and intentionally blocked the fans so it can heat up and helped it with the hair drier on the GPU heatsink (not the most elegant solution i know). After that the laptop actually powered up and booted normally. After it booted up, I have been using it for weeks. I have been stress testing it , benchmarking the GPU for hours, it never BSOD'ed or restarted, it ran like a champ. Now the curious part. If I use windows to issue a restart command it goes through it fine, it boots up like normal, BUT if i shut it down and then try to power it back up it wont start, unless i do the heating thing all over again. Why does the laptop work flawlessly, but if shut down completely it wont power on ? Is this how a broken GPU behaves ? Yet if its broken ... it works too well...(as i said no errors or blue screens for hours of League , and unigine Heaven runs for full nights).