My laptop screen is flickering right after i tried to mount hdd on lineage os ( android x86 ) following this tutorial : click here laptop model is Hp Probook 640 G1 . I have reformatted the laptop to Windows 7 Ultimate 64 bit after the problem occur . I made a full wipe on the hard disk expecting this to solve . I then update the display driver which is intel hd 4600 graphics driver but the problem is still not solved . Then i update the bios to the latest version . I downloaded the hd 4600 driver on hp website . I have downloaded and tried 2 graphics driver available for my probook on the manufacturer website . Still the same . Not solved .
This is the picture of the screen : [IMG][click here]2
The fault appear to occur before you have had a chance to install any drivers which makes me wonder if you have a hardware problem. How old is your laptop? Does the problem occur when you were installing Windows 7?