Extremely slow startup on HP Pavilion
I have an HP Pavilion PC570 which has SSD windows main drive and which has always been very fast to boot or to wake from sleep mode. HP recommended a AMD Radeon graphics driver upgrade in 16th December 2017 and I believe my problem with extremely slow startup started then. The driver download was sp78753 version 18.104.22.168768 for win 10v1607. If I look in device manager, I see two Radeon Drivers:
AMD Radeon R5 M435
AMD Radeon R7 Graphics
The problem as I see it is that on boot and waking from sleep, if I can get windows 'task manager' running, I see 100% processor usage with the culprit being windows 'system interrupts'. This can last for 3-4 minutes before clearing and then windows behaves normally.
I found that the Driver 'AMD Radeon R5 M435' had an update available which I performed and which cured startup problem, however I could not use it as my Adobe PhotoshopCC had a problem with the graphics and would not run properly so I had to roll back this driver. The error I kept getting when attempting to use PhotoshopCC was 'THREAD_STUCK_IN_DEVICE_DRIVER'.
The AMD Radeon R7 Graphics driver has no update available and there is no rollback available either. So I have to put up with the extremely slow startup problem unless you can suggest a fix.
My windows version is win10 Home version 1709.