Hi Guys! Its just me again in desperate need of some help!. First of all the overclockers website wont allow me to post my query in the right forum! so i'm not sure whats going on there?. Can someone please help me about this?. Secondly, I purchased a sapphire hd 7870 ghz edition gpu about two days ago for my above system but i have not been able to install it successfully. Firstly, i tried installing the driver software from the enclosed cd. The drivers appeared to be installed sucessfully but there was an error report created. I did not fully understand the error report but i thought it was due to the fact that i had not installed the graphics card first. After correctly installing the card into the pci-express 16 slot, I switched on my pc. I have tried both connecting my hdmi cable from monitor to motherboard hdmi input and also monitor to sapphire 7870 hdmi input. The system appears to boot and the twin fans of my gpu were spinning. however, there was no signal to the monitor. I then read in the enclosed instructions that I was supposed to disable the on board graphics in my bios. So, I shut down the system, removed the graphics card, restarted my system and disabled the onboard graphics in the bios. This led to greater problems as i was then unable to get a signal on the monitor via the motherboard graphics. I had to clear the CMOS to return to default bios setting and succesfully regain picture to my hdmi monitor via onboard graphics. My pc no longer loads windows succesfully and i am now in the process of reinstalling windows os and all motherboard drivers etc. Please can you advise me to succesfully install my sapphire 7870 ghz edition gpu?