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New system was fine, now a power problem?

Forum Homebuilt Systems : General Homebuilt - New system was fine, now a power problem?

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Just finished my new quad core system build 2 weeks ago, and everything went very smoothly. I thought I was in the clear with no hardware problems until just now. The new system suddenly just displayed an all white screen and hung there. When I powered it off, and then powered it back on, it now just cycles between 5 seconds powered on, then 5 seconds powered off, over and over again by itself. I've never seen this before. What do you think is the prime candidate? The power supply, the system board, or another component? Any help is much appreciated.

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It would be much easier to help you if you listed the complete system specs. Not knowing what hardware we're working with makes it a little hard.

This checklist is the first place to start:

http://www.tomshardware.com/forum/ [...] t-problems

Reply to shortstuff_mt

Here are my system specs. Everything ran fine for 2 weeks, so I believe all connections and configurations were initially OK.

Antec Nine Hundred Black Steel ATX Mid Tower Computer Case
GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard
EVGA 896-P3-1170-AR GeForce GTX 275 896MB 448-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
PC Power & Cooling S75QB 750W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply
Intel Core 2 Quad Q9650 3.0GHz LGA 775 95W Quad-Core Processor Model BX80569Q9650
OCZ Reaper HPC Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2RPR800C44GK
Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drives
HP 22X DVD Burner Black SATA Model 1170i
AuzenTech AZT-FORTE X-Fi Forte 7.1 Low Profile PCI Express Sound Card
ZALMAN CNPS 9700 NT 110mm 2 Ball Ultra Quiet CPU Cooler

Reply to whit80

I would focus on the RAM first. Try each stick of RAM by itself in the first RAM slot.

Message quoted 1 times

Reply to shortstuff_mt

shortstuff_mt wrote :

I would focus on the RAM first. Try each stick of RAM by itself in the first RAM slot.

I tried the RAM and it didn't make any difference. I tried removing all connections and devices to the motherboard except power and the CPU, and when I powered up, the system still cycled up and down like a yo yo. I used a power supply tester on my power supply and it checked out OK, so at this point I think it's either the CPU or the motherboard. I only have about 10 days until my 30 days are up at New Egg where I bought everything, so I am under the gun to get the right component replaced. Do you think it's the CPU or the motherboard? Thanks for your help.

Reply to whit80

The "boot loop" happens on Gigabyte motherboards. For future reference, very good Gigabyte support is given on this forum:

http://forums.tweaktown.com/f69/ga [...] ean-28160/

which is actually the home of Gigabyte forum support.

Anyhow, in that thread please read what Lsdmeasap says about the boot loop. Need to clear CMOS "properly", and he says this:

"I have had mixed experiances with my Clear CMOS Button. Once I used it with the system plugged in and just held it in for about a Minute and it worked fine. Other times I had tried this with no luck. A few times I had it work with the PSU Unplugged, and again other times I had to remove the battery and press the button for a minute.

So to be sure you may want/need to try all of the above. You will know when it clears because you will get the CMOS CheckSum error screen. You will see this screen after a Proper CMOS Clear, the screen is black and will say Checksum error with a large box that allows you to choose Last known Good, Optimized defaults, ect.

Sometimes if you are doing the battery ONLY method that can take up to 24hours. Best to either use the button or a Jumper on the Clear CMOS Pins. You may also speed things up by unplugging the PSU and holding in the Case or Board Power Switch to drain remaining power out of the system"

Choose "Optimized Defaults" and start again.

Reply to Twoboxer

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New system was fine, now a power problem?

Forum Homebuilt Systems : General Homebuilt - New system was fine, now a power problem?