Alright good news, I think! I managed to get a USB keyboard and mouse and the audio crackle I used to get from my PS/2 keyboard is gone completely! However, I checked the DPC latency to make sure it was all gone but now it seems that ndis.sys and USBPORT.SYS are spiking, up to about 4.5% CPU usage. Is this something that needs fixing or is everything normal now? If so, then the only downside is that I have to get used to this new keyboard. Oh well, much better than the alternative. Thank you so much for all your help, you're a godsend. Edit: I noticed some clicking while I was watching some HD videos on youtube so I checked my DPC latency out while watching. It seems my USBPORT.SYS is spiking up to %10 CPU usage. Is there a way to fix this aswell?