New power supply, PC does not turn off and monitor wont respond

[Uzername101]

Hello people on Toms Hardware, I have a problem. I was having problems with my old power supply and the pc randomly turning off. I installed a 750w supernova (EVGA gold) and now my computer wont turn off unless I switch the power supply off. furthermore now the monitor will not respond to the PC I have tried multiple cords including HDMI and DVI in both the graphics card and motherboard.. any help would be nice.

Yes all cables are properly plugged in. I've tried unplugging the GPU and trying to use the 4790k's integrated graphics and still nothing. Motherboard has never shown any problems before. Everything on computer is on. lights, fans and I can hear the HD running.

I have also tried turning the power supply off and unplugging the cord and holding the power button for 30 seconds and then plugging it back in and turning it on. also tried that with the power supply on and with the power supply on and computer running.

Monitor has never had any issues ever and is on and running fine.

 

[MeanMachine41]

Hi Uzername101

Please list the rest of your system specs, MB, DIMMs, GPU. for troubleshooting purpose.
What is your Bios revision.? If not the latest then down load and flash to latest Bios.

Clear CMOS back to default prior to Bios flash.
If you can then access Bios, check settings re: iGPU and GPU.
Ensure all connections to MB are secure, 24pin, 8pin and 4pin if you have one.
Also try with just one DIMM in first slot and try switching them around to eliminate the possibility of one DIMM failing.
Please refer to this post for a comprehensive check list: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Please report back.

 

[Uzername101]

Thanks for responding MeanMachine41.

Motherboard is Fatal1ty Z97X killer edition.
RAM is 2x 4GB DDR3 Jipjaws.
GPU is MSI GTX 980 "gaming 4g"

Not sure on what version of the BIOS I'm running. Haven't updated it in about a year so there is propably a newer version. However I don't know what "flash to latest BIOS" means. I don't know how I could update it without a screen.

I do not have a jumper, would I hold a flathead screw driver to the 2-3 pins (haven't checked yet) while I power on my system?

If that does not work I will check the RAM although I don't see how that could be it.

 

[MeanMachine41]

You can obtain your current bios version from CPUz or when in Bios under the Main menu tab.
Go to ASROCK Support site and download your latest Bios ver 1.5 from here: http://www.asrock.com/mb/Intel/Fatal1ty%20Z97X%20Killer3.1/?cat=Download&os=BIOS

For how to flash your Bios go here: http://www.asrock.com/support/BIOSUI.asp?cat=BIOS8

NO screwdrivers near MB when power is on. Have you tried to press [F2] during POST to get into BIOS setup menu. You can also use the F9 key to set EUFI back to default.

With many Boards you can update without the Bios or OS however, I don't think you can with your MB.

I have no direct experience with your ASROCK board and someone who has may come on and help.

In case you have corrupted Bios you have a backup. Look on page 19 and 20 of your MB Manual for the CMOS and backup pin switching locations.

 

[Uzername101]

Hello, after dropping the jumper that connected pin 1 to pin 2, I touched pin 2 to 3 with a screwdriver. I later found it, put it on pin 2 and 3 for 5 seconds, and put it back on pin 1 and 2.

I now no longer have a PC. Absolutely nothing when I hit the power button. nothing else is connected to it so I don't know if power is flowing or not.

 

[MeanMachine41]

This is an extract taken from ASROCK site.

The clear CMOS jumper and reset factory defaults are not always effective in solving BIOS value corruption and so the only other recourse is to remove the CMOS battery. Many people are aware of this method but fairly often it is not done correctly and hence does not resolve the issue. Below I will outline a foolproof method to achieve a full CMOS clear.

1. Disconnect the system's power from the wall
2. Press and hold the power button for 10 seconds to be sure residual power is discharged
3. Place the "Clear CMOS" jumper in the clear position
4. Remove the CMOS battery
5. Leave the system in this state for 4 hours. 10 minutes is enough in most cases but if that yields no result then to be absolutely certain CMOS is clear I recommend 4 hours.
6. Place the "Clear CMOS" jumper back in its original position
7. Replace the CMOS battery
8. Power on the system

This method should effectively rule out BIOS value corruption as a culprit during troubleshooting.

BIOS value corruption = corrupted settings in the BIOS
BIOS corruption = Corrupt BIOS/UEFI firmware due to a bad flash

Hope this helps.

 

[Uzername101]

Alright I'm doing that right now. Do I have to buy a whole new CMOS battery? or do I just remove it and put it back in.

OK so I did that, nope, didn't work.

connected my keyboard to the motherboard and sure enough it lit up. Why could it not be turning on?

 

[MeanMachine41]

Alright I'm doing that right now. Do I have to buy a whole new CMOS battery? or do I just remove it and put it back in.

A failing CMOS battery is a common cause for a system refusing to boot. If its more than 2 years old, then worth replacing as the CR2032 battery only costs around $4.