Has to be a dead MoBo?

[heshclub7]

The other day, my computer was cutting out and would stop responding while streaming a soccer game to my chrome cast.

I went to turn it on today, and all the fans, lights and peripherals start up but the monitor and keyboard and mouse don’t respond.

I’ve taken out the gpu and tried the dedicated graphics, tried each individula RAM stick one at a time, unplugged all peripherals, and cleared the CMOS by removing the battery.

It’s a new PSU EVGA G3 650w so I doubt that’s the problem. Is there anything I’m missing? Has to be a dead motherboard?

Specs

CPU: i7-3770
GPU MSI GTX970
PSU EVGA G3 650W
MOBO ASUS P8Z68- V LX

 

[trampus123]

with the ram installed do you see dram LEDs on and is the green power LED in the mobo light up if not test power supply if test good then it is the mobo.
thei7-3770 is a good CPU still if it the board and you need to save some cash just get a new mobo I fine them used all the time for less then $50. US

 

[SgtScream]

Unplug the power cord to the monitor for ten seconds, then plug it back in.

 

[heshclub7]

No RAM LEDs on this board but the green mobo LED lights up. I just got a used mobo in January of this year when my other one died. I’m hoping it’s not a case problem or something that keeps ruining my mobos.

 

[SgtScream]

Does it post if you take all the parts out of the case? Also just because the power supply is new doesn't mean it's not defective.

 

[SgtScream]

Also you can get your hands on a motherboard speaker and see if there's a beep code:
https://www.asus.com/support/FAQ/1029953

 

[heshclub7]

Does it post if you take all the parts out of the case? Also just because the power supply is new doesn't mean it's not defective.

Will try when I get home. Everything seemed to be working fine for about 2 months after getting the new power supply but you never know. Will update once I try.

 

[larrycumming]

what was the reason for getting a new PSU? did the old one blow out?

 

[heshclub7]

what was the reason for getting a new PSU? did the old one blow out?

The old one had a fan malfunction. Would overheat under fairy light load (Playing games like LoL). Checked the GPU and it wasn’t overheating during that time, neither was the CPU

 

[heshclub7]

Took out the CPU and nothing happens when I press the power button. I don’t have a speaker for beep codes though. Never had to get one. What am I looking for?

 

[SgtScream]

There may not be a need for the speaker if there's diagnostic leds on the motherboard:
https://www.amazon.com/PC-Internal-Mini-Onboard-Speaker/dp/B002W4M0DW
It might have come with your motherboard.

 

[Darkbreeze]

How did you determine that the keyboard and mouse were not working, if the monitor was not working?


Have you tried a different monitor? Do you get ANYTHING on the display when you power up, even the monitors built in no signal or logo display?

Have you tried a different display cable or a different display output type?

Tried replacing the CMOS battery? I've seen motherboards that would not give you anything other than the power on light and fan operation, especially on older boards, if the cmos battery was dead.

The only thing taking the CPU out can tell you is whether or not there are bent motherboard pins or some kind of damage to the contacts on the bottom of the CPU, unless you have another CPU to use in it's place for the purpose of eliminating the CPU as the source of the problem.

Memory is a different story. If you have other memory, or can borrow some, that is compatible and was never used with the previous board or this one, to at least try, you could probably completely eliminate memory as the issue as well.

I'd try the CMOS battery first, monitor cable second, monitor third (If there is no display whatsoever, even the logo or no signal message) and after that, given the obvious age of this platform, I'd say it's either a motherboard or CPU failure if nothing else can be determined based on checking every single thing here:

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

 

[Darkbreeze]

There may not be a need for the speaker if there's diagnostic leds on the motherboard:
https://www.amazon.com/PC-Internal-Mini-Onboard-Speaker/dp/B002W4M0DW
It might have come with your motherboard.

I've never seen any Z68 motherboard that had diagnostic LEDs. I don't even think we started seeing those until Z97, at least.

 

[heshclub7]

How did you determine that the keyboard and mouse were not working, if the monitor was not working?


Have you tried a different monitor? Do you get ANYTHING on the display when you power up, even the monitors built in no signal or logo display?

Have you tried a different display cable or a different display output type?

Tried replacing the CMOS battery? I've seen motherboards that would not give you anything other than the power on light and fan operation, especially on older boards, if the cmos battery was dead.

The only thing taking the CPU out can tell you is whether or not there are bent motherboard pins or some kind of damage to the contacts on the bottom of the CPU, unless you have another CPU to use in it's place for the purpose of eliminating the CPU as the source of the problem.

Memory is a different story. If you have other memory, or can borrow some, that is compatible and was never used with the previous board or this one, to at least try, you could probably completely eliminate memory as the issue as well.

I'd try the CMOS battery first, monitor cable second, monitor third (If there is no display whatsoever, even the logo or no signal message) and after that, given the obvious age of this platform, I'd say it's either a motherboard or CPU failure if nothing else can be determined based on checking every single thing here:

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Keyboard and mouse not lighting up at all is the only reason I know they aren’t working. Monitor turns on and scans VGA, DVI and HDMI for signals but doesn’t pick up any of them. Tried all those plugs. Monitor seems to register something is plugged in though and just says going to sleep. If I unplug the cable completely, it says check video cable.

Have tried everything else on the list and have ordered a mobo speaker. Better to spend $3 and be sure then shell out for new parts.

 

[Darkbreeze]

CMOS battery is probably less than a speaker. Two bucks at most Walmart, office supply or electronics stores. But I agree it's a good idea to have one ALWAYS, for EVERY system that does not have debug LED codes that are displayed. There is enough guesswork involved even when you have those codes, because they are not always spot on, than trying to figure things out without something to even get you in the right ballpark.