New Comp Build Shuts itself Down

July 23, 2009 at 14:38:31
Specs: Windows Vista
I am building a new computer for a friend and I wired it all upand went to turn it on and it restarts itself every 5 - 10 seconds. No video is ever sent to the monitor. The all the fans do turn on... but the CPU fan is slower then the rest to turn on. Maby like 1 second later.

I tried starting the system with the case fans not connected, also with the video card not in, and none of that helped...

Any thoughts

Computer Specs are:
- RAIDMAX SMILODON ATX-612WBP Black 500w Power supply
- GIGABYTE GA-EP45-UD3R LGA 775 Intel P45 ATX Intel Motherboard
- XFX PVT98GYDLU GeForce 9800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
- Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor
- G.SKILL 4GB (4 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory
- Western Digital Caviar Blue WD1600AAJS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive

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July 23, 2009 at 16:03:26
I can think of 3 possible problems right off the bat:

1. the power supply is garbage.

2. you didn't install the heatsink on the CPU properly.

3. you didn't benchtest before installing the hardware in the case.

Of those 3 possibilities, # 2 & 3 are just guesses. But # 1 is a fact. The PSU is garbage. You bought a case/PSU combo for how much...about $60? A decent 500W PSU sells for at least $60 all by itself. Where do you think the manufacturer cut corners on the combo?

I'll never understand how someone can spend $100 for a board, $170 for a CPU, $110 for a video card, $50 for RAM, $40 for a HDD....for a total of approx $475...then connect it all to a $20 PSU?

Buy a decent power supply!

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July 23, 2009 at 16:09:24
actually the powersupply is fins so far... you were right that the heat sink was not installed properly... it was not on all the way... I reseated it and applied Articsilver 5 and it does not restart itself...

However I am still not getting any video to the monitor at all... so i am going to try that video card in my pc and see if it is good... if it is good have any thoughts on that?

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July 23, 2009 at 16:38:04
"the powersupply is fins so far..."

Sorry, the PSU is a cheap piece of crap. Does it have a single +12v rail or multiple +12v rails? If it's a single, is it at least 30A? If it's multiple, does each +12v rail have 18-20A? What about the +5v rail? Closer to 20A or 40A? PSU manufacturer's fudge the wattage rating by loading up on the +5v rail. The difference between 20A & 40A on the +5v is 100W. Do you know what uses the +5v rail? Not much. My guess is your PSU is at best, a 400W unit, but it doesn't have enough amperage on the +12v rail to power your higher end/power hungry hardware.

Look at the amperage specs to the PSU that I posted a link to:

+3.3v @ 30A
+5v @ 20A
+12v @ 41A

My guess is your PSU specs are something like this:

+3.3v @ 30A
+5v @ 40A
+12v @ 20A

Check the label.

Do you know the power requirements for the 9800GT? Minimum 400W PSU with a minimum 24A on the +12v rail. Hmmmm.

Besides the PSU, how did you go about applying the Arctic Silver? Another question might be WHY did you use Arctic Silver? Regardless, here's how it should have been applied...if you did it any other way, remove the heatsink, clean it, clean all the paste off the CPU, then do it right:

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