Laptop GPU could have failed

[Dieter.koenig]

Hi. I have an Laptop Hp Elitebook 8460p with AMD RADEON HD 7400M GPU but after I Overclocked my monitor from 60 to 120 Hz it could have caused the GPU to fail, first 2 days after overclocking the monitor it worked fine but after 3 days the screen starded flickering then after another 3 days, I did a fresh OS reinstall (thinking this could fix the screen flickering) but another issue starting to show up, after installing the gpu drivers my screen turned to black with a cursor in the middle. Tried some YT tutorials to fix the black screen with cursor but after booting up now it shows as below:

[Bubbles_TPB]

Does another monitor work?

[Dieter.koenig]

3 hours ago, LukeTheCoder05 said:

Does another monitor work?

It shows the same as in my Laptop screen.

[Bubbles_TPB]

yeah Probably or VRAM Problem.

[Dieter.koenig]

32 minutes ago, LukeTheCoder05 said:

yeah Probably or VRAM Problem.

How can I fix this? 

[Bubbles_TPB]

5 minutes ago, Dieter.koenig said:

How can I fix this? 

Try resetting the bios (Flash it, take out then put back in CMOS battery, etc.) Other than that you might need a new laptop.