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Help! Computer won't turn on!

rhspeed206

Member
Joined
May 16, 2012
Messages
17
I have a CORSAIR Enthusiast Series TX750 V2 750W ATX 12V 80 PLUS BRONZE Certified Active PFC High Performance Power Supply and today was working fine but until I turn the computer off, it won't turn back on even the flickers behind the power supply won't work. Could it be the motherboard or should I unplug and reconnect everything! Help me.

computer specs

Asrock z68 pro 3 gen 3 intel LGA 1155 motherboard
Intel i7 2600k
16gb ram Corsair Vengeance
m4 crucial 128gb ssd
Amd Firepro v5900 graphics card
Western Digital Caviar Blue 500gb 7200 rpm SATA 6.0GB/ 3.5 internal hard drive
 

Rasparthe

Well-known member
Joined
Mar 25, 2010
Messages
409
Location
44N by 79W
That motherboard should have LED lights that turn on when the power supply is on, are they lit? If they are not lit then either the power supply is not connected to the motherboard at all or the power supply has died. Stupid question of course, but you have the switch on the back of the power supply turned to the on position right?
 

Ravenor

Well-known member
Joined
Oct 28, 2010
Messages
293
Location
Oakville, Ontario
is it possibly plugged into a powerbar that has a separate on/off that is switched off? How old is the TX750? You may want to open the case and re-seat all of the motherboard connectors to make sure something didn't come loose.
 

rhspeed206

Member
Joined
May 16, 2012
Messages
17
I just tested the power supply alone and it works, YAY!!, but now I'm thinking is it the motherboard?? I'm going to reconnect the motherboard and see what happens
 

rhspeed206

Member
Joined
May 16, 2012
Messages
17
I reconnected everything and nothing works. Its frustrating me, can anyone tell me whats going on?
 

moocow

Well-known member
Joined
Aug 8, 2011
Messages
1,278
Location
Vancouver, BC
There are literally dozens of reasons why a board won't turn on. But if it was working fine but then suddenly didn't, I would say possible CPU or motherboard. Did you put the power supply in another computer to test? If so, can you use it to test other components? If you're really short on time, then just buy another board, RMA the current one, and sell it here when it comes back from RMA. Yes, you will lose some money but save some down time.
 

bigFOIG

Well-known member
Joined
Apr 4, 2011
Messages
410
Location
Vancouver, B.C.
Check if the power button cable is plugged in all the way. It's one of this tiny wire usually located at the bottom right of your motherboard. Or if your motherboard has a power button directly on the board, try that.
 

rhspeed206

Member
Joined
May 16, 2012
Messages
17
Problem solved!!, I took out the CMOS Battery for between 4 or 5 minutes and the motherboard is restored and put the bios to ACHI instead of IDE, one more question should I enable or disable the Hard drive smart? I have a Crucial 128gb SSD and 320GB Hard Drive, Thank you everyone for your help:biggrin:.
 

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