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What's up everyone I really hope some one can help!

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I build a PC a few months ago with the following specs.
Intel Core i7 2600k 3.4
MSI P67A-C43 Military Class II
Nvidia Geforece 550 Ti SC 1GB
8 GB Ram
1TB HDD Seagate Barracuda
700 Watt TR2 PSU Thermaltake

About a week ago I tried starting it as usual and it didn't powered up. I tought the PSU was damaged, but first I made sure everything was plugged in correctly. I re-seat the video card, ram, everything! and it managed to start. It worked good for the following day. Than once again, the problem persisted. I re-seat everything again and no luck. I installed a new PSU and it didn't power up at all either. By now, I know it's not the PSU, I re-installed the old PSU back again and this time to find out the PC get's power but turns on for a second and reboots repeatedly. It boots repeatedly till the point I need to turn off the PSU switch. I tried everything and I'm about to pull my hair out of my head. I removed everything from the case and re-build it again and it still doesn't power up. I removed the CMOS battery, and still no luck. Tried switching the ram stick to different slots and nothing.

Also if this helps, the time it did boot the time changed but not the date.

I don't know what else to do guys, is this a PSU or the MOBO, CPU?

Thanks in advance for taking time to help me out.

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Hi


The last time I saw anything like that it was a corrupted bios update
It was a Gigabyte motherboard with a dual bios,

Oneday shortly after fitting a new cpu (fastest motherboard supported) it decided the main bios was corrupt and automatically tried to use the backup bios to reflash the main bios and failed
There was no jumper to force backup bios chip to be boot bios so I had to scrap the motherboard.

If you never saw a bios flash message, first try re-setting cmos using jumper
(not same as removing battery which may take a long time to work)

remove all disks except dvd drive, if there is a motherboard graphics use that and remove graphics card
remove any other PCI or PCIE cards, remove ram so only 1 DIMM in place (assuming 2 x 4GB or 4 x 2GB)
looks like you have a single 8GB dimm get hold of 1GB or 2GB dimm to test in place of single 8GB


There are PCI & PCIe diagnostic cards which have either leds or LCD which shows how far bootup process has gone which can help diagnose fault
These are not very expensive

If all else fails read up on motherboard user guide about emergency re flashing bios either from usb or cdrom.

final step find out if CPU or motherboard is problem by using a spare known good CPU and motherboard
Or get a specialist repair shop to do this for you

best of luck

Mike Barnes

I would second the point where the bios is at fault. If the board has crash free bios dual bios as said, the second may be trying to re-write the first bios, sometimes this does not go to well and to completely refresh any settings to the first bios a short of the bios may have to be done to refresh all the settings to flush any clutter, or it can cause a lock up of the system. But I would think about an RMA of the board also if it persists.

M1ch43l said:
I build a PC a few months ago with the following specs.
Intel Core i7 2600k 3.4
MSI P67A-C43 Military Class II
Nvidia Geforece 550 Ti SC 1GB
8 GB Ram
1TB HDD Seagate Barracuda
700 Watt TR2 PSU Thermaltake

About a week ago I tried starting it as usual and it didn't powered up. I tought the PSU was damaged, but first I made sure everything was plugged in correctly. I re-seat the video card, ram, everything! and it managed to start. It worked good for the following day. Than once again, the problem persisted. I re-seat everything again and no luck. I installed a new PSU and it didn't power up at all either. By now, I know it's not the PSU, I re-installed the old PSU back again and this time to find out the PC get's power but turns on for a second and reboots repeatedly. It boots repeatedly till the point I need to turn off the PSU switch. I tried everything and I'm about to pull my hair out of my head. I removed everything from the case and re-build it again and it still doesn't power up. I removed the CMOS battery, and still no luck. Tried switching the ram stick to different slots and nothing.

Also if this helps, the time it did boot the time changed but not the date.

I don't know what else to do guys, is this a PSU or the MOBO, CPU?

Thanks in advance for taking time to help me out.




Ok mbarnes86, I would try what you recommended. Thanks for the feedback!

Well, there is no jumper to clear the CMOS, there is a button to do it. I tried it and nothing happens. I tried the 1 slot ram, I have 2 4gb sticks and still nothing, computer doesn't power up at all. I tried without the video card and nothing. My last hope is trying the board and cpu on other working PCs.
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