Changed power supply on my dell dimension 8400 now it wont power up Tags: Dell Power Supplies Power Up Dimension Computers Last response: February 26, 2010 2:56 PM in Computer Brands Share dennisj February 25, 2010 4:19:19 PM changed power supply on my dell dimension 8400 now it wont power up More about : changed power supply dell dimension 8400 wont power aford10 a b ) Power supply February 26, 2010 2:31:22 AM Did you connect all the cables properly? What PSU did you install? Do you see any signs of life? m 0 l rockyjohn February 26, 2010 2:56:13 PM In addition to aford's questions: Why did you change the power supply? Were you having problems with the system before the changeout? Did you make any other changes at the same time - such as changing out the video card? m 0 l Can't find your answer ? Ask ! Publish Related resources Finished: My Dell Dimension 4600 Rebuild project, But now won\'t power up!Pictur Forum I replaced the power supply on my Dell Dimension 2350 with Windows XP, now the m Forum Changing power button de Dell Dimension 8400 Forum Shut down computer, changed power source from wall to powerstrip - now won't boot up! help! Forum Dell dimension e520 wont power up Forum Dell dimensions 8400 will not boot up after the power was suddenly discontinued Forum New video card and Power Supply, but now computer wont boot up outside of safe m Forum SolvedDell Dimension 5150 Power Supply Upgrade Forum SolvedPower Supply For Dell Dimension 4600i Forum SolvedChanged out CPUs, now computer will power up but not boot Forum My Dell PC won\'t power up........... is it the power supply? Forum My Dell PC won't power up........... is it the power supply? Forum Can i uprage my power supply in DELL dimension 5150 Forum SolvedADVICE? Dell Dimension 4550 Won't Power On - Blinking PSU & Mobo LED's Forum SolvedPower supply and video card wont hook up Forum SolvedNew power supply now computer won't turn on Forum SolvedPower Supply Issues PC Won't Power Up Forum SolvedPower Supply Spin slowly but the system not boot up -rebuilding,use Dell Inspiron 560 case Forum SolvedGPU Wont power up, even though it's connected to Power Supply Forum Does the dell dimension 4450 power supply require mounting rails? Forum More resources Read discussions in other Computer Brands categories Compaq Dell Gateway Hewlett Packard Packard Bell Apple eMachines !