New Graphics Card, New Power Supply. 1 year old Gateway GM5088. No Input detected on the new graphics card!?

Hi angela this actually sounds like a driver issue,however the mouse freezing has more in common with recent NVidia drivers and not AMD ... however as your pc ( or motherboard to be more precise ) won't recognize your HD6670 then reinstalling a new drivers isn't a option so your next option is to reseat the card ... this isn't difficult and all you need to do is turn off your pc and remove it from the mains.. then open your case and remove the screw that secures the graphics card in place ... then you need to gently push the small latch at the end of the pci-express x16 slot which will release the card .. this can be awkward but just slowly and gently push the latch/clip upwards towards the cpu while holding the graphics card with your other hand .. at the same time move the card towards you while pressing the latch once the card is removed physically inspect it and blow any dust from the fan and the card .. and check for any damage to the cards connector ( also known as pci-express teeth ) ... then when you are happy clean any dust from inside the actual pci-express x16 slot .( use compressed air in a can(air duster ) .. ) then once this is done you can safely insert the card back into the pci-express x16 slot ... if your motherboard has a second pci-express x16 slot then you can insert it into the second pci-e slot .... this can cancel out any problems with the first pci-express slot ( or determine if there is a problem ) once the card is fitted and secured with the screw you should also reset the bios ( basic input output system ) ... you can do this by removing the cmos battery ( http://www.domstechblog.com/wp-content/u... ) for 20 seconds and then place it back in .. this resets all the bios options to their default values and can fix several problems .... then once this is done do a quick check of all cables making sure none have come loose,and pay special attention to sata cables( both data and power cables ) on both the hard drive(s) and optical drives ( dvdrw ) now place the side panel on your pc and as soon as the pc starts press the "delete" key ( or whichever key is used to enter the bios/set up ) and when you access the main bios screen look for a option marked "init display first " .. then make sure its set to "pci-express" or "peg" ....( this lets the bios know its using a dedicated graphics card or the HD6670 in your case ) before exiting the bios remember the press "save and exit set up" on the main bios screen which will save the changes you have made ( and once this is pressed your pc will restart and boot into windows ) if you still have problems then try this ... start the pc and after the post screen ( the black screen you see first ) tap the F8 key until you see the safe mode screen ... then select the option "enable low resolution video ( 640x480)" .. this will let windows use a basic display driver to access the windows desktop and not only will this allow you to diagnose problems but will also indicate the problem is more than likely a driver issue once at the desktop instead of installing drivers from the disk or downloaded you should go to windows update and then click the "optional" tab and install the AMD driver that's there ... this is a verified AMD driver and should work no problem " and ensure you run the driver as "administrator " give these a go angela and let me know if you have any questions good luck!

Try reinstalling it physically, it may be a pain in the *** but it will most likely work.

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