-- Posted by nickgrand2 at 6:31 pm on Jan. 8, 2009 I just replace my CPU is my desktop with a AMD7750 x2 and now my PC wont output any gfx.   I tried my gfx card i tried the integrated gfx. Nothing. It powers on the heatsink is new and works fine. Anyone know what the prob is or how to fix   -- Posted by drifting at 6:36 pm on Jan. 8, 2009 Check the bus speed? I would work with the integrated first, make sure you can get that one working, then add in your other. Also, remove any unnecessary devices to eliminate those. Whats your PSU rated at as well? Its quite possible thats the reason. -- Posted by nickgrand2 at 6:38 pm on Jan. 8, 2009 Quote: from drifting at 9:36 pm on Jan. 8, 2009 Check the bus speed?   I would work with the integrated first, make sure you can get that one working, then add in your other. Also, remove any unnecessary devices to eliminate those.   Whats your PSU rated at as well? Its quite possible thats the reason. As for the bus speed idk,  it has a 500 wat PSU in it tho -- Posted by drifting at 6:48 pm on Jan. 8, 2009 Quote: from nickgrand2 at 9:38 pm on Jan. 8, 2009 Quote: from drifting at 9:36 pm on Jan. 8, 2009 Check the bus speed?    I would work with the integrated first, make sure you can get that one working, then add in your other. Also, remove any unnecessary devices to eliminate those.    Whats your PSU rated at as well? Its quite possible thats the reason. As for the bus speed idk,  it has a 500 wat PSU in it tho Motherboard model? -- Posted by Darkane at 3:54 pm on Jan. 10, 2009 Yeah you'd need your motherboard model to find out if it's compatible with your new processor. Some motherboards may support a certain socket but not every processor available for it. If this is the case, just hope the manufacturers website has a BIOS update to enable support.