Rog Strix Z690-A Gaming WiFi D4 suddenly missing drivers ?

[DigitalDreams]

All was working well till I noticed my pc today frequently locking up, not shutting down etc. When it locks up my ESET antivirus seems to keep performing a startup scan. Internet pages stop loading, PC power button doesn't work unless held down and I cant get into task manager. Apps do seem to run but incredibly slowly.

Malware scan ok, virus scan ok while working fine. Looked in device manager and see exclamation marks (no compatible driver) against....

1. PCI Data acquisition and signalling processing controller
2. RAID controller 

Windows update found nothing, forcing device manager to scan drivers I downloaded from ASUS a few months ago finds nothing !?.  Memtest via the bios passed twice so far.

UPDATE 'sfc /scannow' revealed corrupted files and repaired them. PC 'seemed' fine yet Windows logs show ESET antivirus keeps crashing, hence the repeated 'startup scan'. Will next scan the Seagate M2 drive using bookable 'Seatools' and if no fault found reinstall ESET.

Makes me wonder how corrupted files can even occur these days, motherboard or drive issue ?, noisy power cables, spike on the mains ?, bad M2 socket or pads ?... You'd think windows would detect such corruption in its core files, replace them and notify us !

[JohnAb]

Not sure what the issue is, but seems like you likely have a virus or an unhappy install of Windows for some reason. Think I'd start again with a fresh install. Backup all of your data, saved games, website favourites, browser stored passwords etc. first though. 

1. PCI Data acquisition and signalling processing controller - do you have a network card or other PCI device plugged in? If so, likely that's the culprit and you'll need the drivers for it. If not, have you installed all drivers on your support page? Some might be hidden behind expanding/drop-down sections on that page. My best guess would be missing network or chipset drivers.  
2. The RAID error can be fixed by Installing Intel's Rapid Storage Technology driver

Hope that helps. 

[DigitalDreams]

Just downloaded two new drivers from the Asus support page (lan and chipset). Neither were accepted as driver updates for the unhappy devices. One asus setup ran, the other just flashes a panel then dissappears (no need to update ?). No other network devices installed, just the onboard Intel. Then found an old Intel RST driver on the same website and it sorted the raid driver thanks !

Still missing the 'PCI Data Acquisition and Signal Processing Controller' driver..