I have installed win 8.1 on notebook HP Elitebook 8440p but on website drivers for win 8.1 are not available . But it is working fine but i am not satisfied because of grafix performance, like it is playing HD video but not an attractive one. All drivers were installed by default except finger print reader . I installed the drivers available for 7 and it is working fine ? Suggest me should i go for degrading my system to 7 or install the Drivers available for 7 on 8.1?