Originally Posted by CrayonMunch
If a dvd is in the drive there is still a sign of startup on the screen, it will post and at the very least there will be at least a flashing cursor regardless of if there is a bootable disc in the drive, even if it hangs on boot there would still be something on the display. And again if the hard drive is disconnected the computer would still post hence meaning you answers were not for a completely black screen. There would also be beeb codes to indicate various errors
And i didnt say it was def the GPU i said it might be.
I missed the bit in the op about the attempts on an external display.
Apparently you don't deal with a lot of laptops.. I work with them everyday. If a DVD is in the drive during boot up, it may
hang the system up until the DVD drive is ejected, then normal boot-up will happen. It is all dependent on how the system is setup.
And, if the HDD is slightly disconnected, it can still work, but there may be issues, for ex: no bootup display (blank black screen), file corruption, and various errors.
And, there are not always beep codes to go a long with various hardware because of electrical glitches/anything. It does happen, lol. You can take RAM out of some computers and the computer will not beep. Also, the OP did not mention anything about a beep code. So why assume that there was one? Maybe the OP didn't catch on to the beeping if it were to have beeped.