new mother board old cpu no boot no post no bios nothing and pc wont power off Tags: Motherboards Systems Power CPUs Last response: August 24, 2013 9:51 AM in Systems Share jplupe19 August 23, 2013 9:38:45 AM so i built my own pc about 4weeks ago here is the specs AMD FM2 A4 5300 Corsair 4GB ddr3 ram x1 Logisys case with 400W power supply MSI FM2 a75 m35 mother board OK so about 3 weeks ago my computer wouldn't display after i pressed power button after looking online for help and this site i tried trouble shooting it by removing each installed hardware till just motherboard CPU and psu still no display i then reset CMOS about 20 times in that day before i tired to power it back on when ever i pressed the power button it would power the CPU fan led and other fans but when i held down the power button it would not turn off after 10s of holding the button i then removed CPU and pressed power button and it would turn on but would not power off after holding power button for 10s i returned the motherboard after speaking with a tech and though Rma got a new board now its doing the same thing but with a brand new mother board with old cpu and ram connected. Is my CPU bad ? my CPU doesn't have any bent pins burns bulges or anything it has never over heated seeing as that ive only used it for about 2 weeks for internet browsing. More about : mother board cpu boot post bios wont power Outlander_04 a c 88 V Motherboard a b à CPUs August 23, 2013 3:28:59 PM most likely your power supply logicsys is not a quality brand But try breadboarding your build out of the case . Start it by touching the power pins for the front header with the tip of a screwdriver momentarily m 0 l jplupe19 August 24, 2013 9:51:04 AM Outlander_04 said:most likely your power supply logicsys is not a quality brand But try breadboarding your build out of the case . Start it by touching the power pins for the front header with the tip of a screwdriver momentarily I've tried that with another psu I have still no display cpu must be bad then right? m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedPC wont boot to post - All fans turn on and computer wont power off without turning off the PSU Forum Solved[SOLVED] New mobo and cpu. Old power supply won't post but fans spin. Forum pc wont detect hard drives and stuck on boot post message. it will detect unless I power off and on again help Forum SolvedPC Won't POST to BIOS after new CPU Install Forum PC won't boot after mother board & cpu upgrade. Forum Old PC won't boot properly, have to power on and off multiple times before displ Forum [Solved]Installed a second set of RAM and a new PSU. PC worked for 24 hours. After accidental power cut, BIOS won't boot. Forum PC won't boot, power light is off and CPU fan is at max. Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !