Press the power button... pc turns on then turns off 2 seconds later

knight84 · 07-01-2008, 07:02 AM

Case: Tagan A+ Monolize ATX
CPU: Intel Core 2 Quad Q6600 2.40 GHz 8MB L2 Cache Total 1066 MHz FSB
Motherboard: EVGA NVIDIA 780i SLI
Video Card: EVGA 9800 GTX
Hard Drive: Western Digital Raptor X 150GB 10000 RPM 16MB Cache SATA
Memory: CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
Power Supply: Antec NeoPower 650W
Drive: Samsung OEM Super-WriteMaster Dual/Double Layer DVD±RW Burner
Monitor: Gateway 22" HDMI Widescreen LCD
Keyboard: Logitech G15

I recently built this computer with a friend. Ran great, no problems for about a month. Then 1 day I turned it on and it shut down 2 seconds later. Tried again and the same thing kept happening. So I unplugged the power supply cord, flipped the power switch on the back of the ps, waited about 30 seconds, plugged it back in and it booted up fine. However, this has become a recurring problem each time I go to boot the pc up for the first time of the day.

Also, When it does turn back on, I am prompted with a screen stating: "Warning! Now System is in Safe Mode. Please reset CPU or Memory Frequency in the CMOS setup"

If anyone could recommend a fix I would really appreciate it.

dai · 07-01-2008, 09:44 AM

usually indicates a failing psu
when you switch it off at the back it resets the psu
what does the bios list the voltages and tempretures as

knight84 · 07-02-2008, 09:46 AM

System Voltage
CPU Core 1.18v
CPU FSB 1.2v
Memory 1.850v
nForce SPP 1.30v
nForce MCP 1.500v
HT nForce SPP <-> MCP 1.20v

System Monitor
CPU 48C
Board 37C
MCP 63C

CPU Core 1.18v
CPU FSB 1.19v
Memory 1.87v
+3.3v 3.20
+3.3v Dual 3.20
+12v 12.03
+5v 4.91
+Vbat 3.08

dai · 07-02-2008, 11:12 PM

redo the paste on the cpu with some arctic silver
http://www.arcticsilver.com/arctic_s...structions.htm
see if you can borrow another 650w+ psu to try in it to check

07-01-2008, 07:02 AM	#1 (permalink)
knight84 Registered User Join Date: Jul 2008 Posts: 4 OS: Vista Ultimate 64 SP1	Press the power button... pc turns on then turns off 2 seconds later Case: Tagan A+ Monolize ATX CPU: Intel Core 2 Quad Q6600 2.40 GHz 8MB L2 Cache Total 1066 MHz FSB Motherboard: EVGA NVIDIA 780i SLI Video Card: EVGA 9800 GTX Hard Drive: Western Digital Raptor X 150GB 10000 RPM 16MB Cache SATA Memory: CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Power Supply: Antec NeoPower 650W Drive: Samsung OEM Super-WriteMaster Dual/Double Layer DVD±RW Burner Monitor: Gateway 22" HDMI Widescreen LCD Keyboard: Logitech G15 I recently built this computer with a friend. Ran great, no problems for about a month. Then 1 day I turned it on and it shut down 2 seconds later. Tried again and the same thing kept happening. So I unplugged the power supply cord, flipped the power switch on the back of the ps, waited about 30 seconds, plugged it back in and it booted up fine. However, this has become a recurring problem each time I go to boot the pc up for the first time of the day. Also, When it does turn back on, I am prompted with a screen stating: "Warning! Now System is in Safe Mode. Please reset CPU or Memory Frequency in the CMOS setup" If anyone could recommend a fix I would really appreciate it.

07-01-2008, 09:44 AM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 41,800 OS: vista 32x ultimate retail	Re: Press the power button... pc turns on then turns off 2 seconds later usually indicates a failing psu when you switch it off at the back it resets the psu what does the bios list the voltages and tempretures as __________________

07-02-2008, 09:46 AM	#3 (permalink)
knight84 Registered User Join Date: Jul 2008 Posts: 4 OS: Vista Ultimate 64 SP1	Re: Press the power button... pc turns on then turns off 2 seconds later System Voltage CPU Core 1.18v CPU FSB 1.2v Memory 1.850v nForce SPP 1.30v nForce MCP 1.500v HT nForce SPP <-> MCP 1.20v System Monitor CPU 48C Board 37C MCP 63C CPU Core 1.18v CPU FSB 1.19v Memory 1.87v +3.3v 3.20 +3.3v Dual 3.20 +12v 12.03 +5v 4.91 +Vbat 3.08

07-02-2008, 11:12 PM	#4 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 41,800 OS: vista 32x ultimate retail	Re: Press the power button... pc turns on then turns off 2 seconds later redo the paste on the cpu with some arctic silver http://www.arcticsilver.com/arctic_s...structions.htm see if you can borrow another 650w+ psu to try in it to check __________________