Hello again ,
HP Probook 4740s with Windows 7 Pro 64bit
GPU: AMD Radeon HD 7650M
CPU: Intel Core i5-2450M CPU 2,5GHz
Chipset: Intel HD Graphics 3000
Display: Generic PnP Monitor on Intel HD Graphics 3000
Motherboard: HP 1846 (U3E1)
BIOS: HP 68IRR Ver. F.68
(I can provide other info if needed).
I just did a clean installation of W7 on my laptop I was previously on W10 but had a lot of issues with "switchable graphics" so I decided to go back on W7.
I did all the updates through Windows Update, I uninstalled and cleaned my laptop from any former drivers for my GPU.
When I tried to update my AMD and Intel drivers through Windows Update, I could access the login screen for one second then I have a BSOD telling me there is a problem with "atikmpag.sys".
I tried a bunch of things I saw on the Internet (delete the file, expand it with another file...) but nothing works, I now have to deactivate my GPU (and the chipset) and can only use my laptop with the basic gpu from Microsoft.
I also tried many different drivers (from HP, from AMD, from Windows), none of them worked.
I always have either a "code 43" error or the BSOD.
I also read that updating the BIOS could improve things but my laptop is a used one and its BIOS is locked with a password I do not have (I've also tried to bypass it, no success...). If there is a way to force a BIOS update I'm willing to try.
I've also read the BSOD is sometimes caused by the GPU death therefore if there is a way to verify that, that would be great too.
I'm pretty desperate and willing to try anything since I've already tried so much...
Tell me if I can provide any more useful information.