I have built a new PC using these components:
Intel Core i5 3450S 2.8GHz Socket 1155 6MB Cache Retail Boxed Processor
Gigabyte GA-H61MA-D2V H61 Socket 1155 7.1 Channel HD Audio mATX Motherboard
Corsair 8GB (2x4GB) DDR3 1333MHz XMS3 Memory Kit CL9 1.5V unbuffered
Seagate 500GB Barracuda Spinpoint F3 Hard Drive - 3.5" SATA-II - 7200RPM 16MB Cache - HD502HJ
Coolermaster Elite Power 500W PSU
Sapphire HD 6770 1GB GDDR5 DVI HDMI DisplayPort PCI-E Graphics Card
Sometimes the fans will spin momentarily and then turn off straight away, and other times it wont even start at all. I have tried stripping it down t just the motherboard, CPU and RAM, but the same thing happens. There doesn't seem to be any reason why sometimes it boots up momentarily and sometimes it doesn't at all, but it seems to happen in clusters, as in when it does start momentarily, it'll do it 4 times in a row.
Some other fixes which have already been tried:
I also only just realised that i need to plug in the ATX_12V, but plugging it in doesn't seem to have had any effect.
Intel Core i5 3450S 2.8GHz Socket 1155 6MB Cache Retail Boxed Processor
Gigabyte GA-H61MA-D2V H61 Socket 1155 7.1 Channel HD Audio mATX Motherboard
Corsair 8GB (2x4GB) DDR3 1333MHz XMS3 Memory Kit CL9 1.5V unbuffered
Seagate 500GB Barracuda Spinpoint F3 Hard Drive - 3.5" SATA-II - 7200RPM 16MB Cache - HD502HJ
Coolermaster Elite Power 500W PSU
Sapphire HD 6770 1GB GDDR5 DVI HDMI DisplayPort PCI-E Graphics Card
Sometimes the fans will spin momentarily and then turn off straight away, and other times it wont even start at all. I have tried stripping it down t just the motherboard, CPU and RAM, but the same thing happens. There doesn't seem to be any reason why sometimes it boots up momentarily and sometimes it doesn't at all, but it seems to happen in clusters, as in when it does start momentarily, it'll do it 4 times in a row.
Some other fixes which have already been tried:
- Starting it with a different PSU
- Reseating the RAM, CPU and PSU + SATA cables
- Checking for any kinds of shorts on the motherboard
I also only just realised that i need to plug in the ATX_12V, but plugging it in doesn't seem to have had any effect.