Laptop momitor problem

[sars_notd_virus]

I agree with Joe and Win2 too,Working on hdmi rules out settings,video card,hdd and mb, ect.. so what you are left with is :- the ribbon cable to the screen..I was also thinking the inverter board but if that was blown then it wouldnt work at all and same for the back light, Check the ribbon is seated correctly and isnt snagged especially at the hindge. New cables between £10-£20ish..
Acers are hit and miss we had two of the same model one is stil going strong after 5 years and the other died within a couple of months.

[joebloggs]

.I was also thinking the inverter board but if that was blown then it wouldnt work at all and same for the back light,.

oh yes it could still work, its not the internal PSU, cheap Chinese surface mount soldering is probably the cause