z77x-udh5 boot up issue

[Lunnatic]

Hi, im having a lot of trouble with my new gigabyte board.

When i boot up after the pc has been shut down for several hours the screen wont turn on but the pc boots fine. If i change the screen to the mobo dvi connector then the screen shows and i can edit the bios. I edit the "Init display first" option from auto to PEG. Then i click save and exit.

The pc then reboots and i can use my dual monitors perfectly. The pc will restart perfectly and i can shut it off for small amounts of time and it will reboot fine.

The issues comes when i leave it off for a few hours or overnight etc. The bios seems to forget the settings i enter. I thought it was a gfx card issue but if it were then it would not work when i changed it to PEG. And the fact that the bios forgets the settings points to a bios problem.

I rang gigabyte tech support and he told me to try a new battery in it but if it were the battery then i would have trouble with the system time etc surely which i dont, everything is fine.

The gfx card is in the PCI Express x16 Slot.


Any advice would be great, gigabyte said they will replace the board if the new battery doesnt work.


My build is:
i7-3770k 3.5
16gb Corsair vengeance ram
gigabyte GTX 560 Ti
gigabyte z77x-ud5h wifi

[stasio]

Did you try to flash new BIOS or use BIOS switch and try Backup BIOS?
If this appear in several BIOS versions,better you RMA board.

[Lunnatic]

I had updated the bios to f14 using @bios (i now know that was a dangerous thing to do)

So once i saw on these forums that @bios can cause issues i flashed a new bios to f14 again and i have changed the setting again. I also backed up the bios after flashing and i saved a profile and loaded it so i hope this now fixes things. Will let you all know.

[profJim]

What is the brand and model name of your power supply? How old is it?
A failing power supply might be the cause of your cold boot problems.

See if a brand new motherboard battery helps.
Using common sense and making assumptions can sometimes cause problems.

[Lunnatic]

My PSU is PC Power & Cooling Silencer 750 Quad, 750W.

It is nearly 5 years old now.

I will try the new battery but could the PSU be a problem?

[profJim]

PCP&C generally makes decent power supplies.
Even the best quality psu can fail at any time.
Can you borrow a comparable psu to test with?

[Lunnatic]

PCP&C generally makes decent power supplies.
Even the best quality psu can fail at any time.
Can you borrow a comparable psu to test with?

Ill have to see if i can, possibly. Might just buy a new one anyway as it is getting on a bit.

Next question is what PSU should i go for? :p

[profJim]

Seasonic makes some of the best power supplies.
They also are an ODM/OEM supplier for all XFX models and some models sold by Antec, Corsair and others.
Super Flower is another high quality psu supplier for some models from Azza, Kingwin, NZXT, Rosewill and others.

Many name brand power supplies are mediocre at best and the quality of some of their models can vary from not very good to very good.
Check out P67 Extrme 6 Intel, Giving error 36 or 62 and freezing., post #6 for my psu recommendations and a list of the best psu review sites. Most psu review sites are a bad joke. I could write psu reviews but I don't have $5000 or more invested in test equipment to perform thorough tests.

Here is an example of one of the best power supplies in the market: JonnyGURU - Seasonic Platinum 660XP 660W Review
My new Seasonic SS-660XP 80+ Platinum psu is replacing my 4 year old Antec TP-750 TruePower New 80+ Bronze psu.
The TP-750 is made by Seasonic and still works fine.

[Rale]

PSU Makers: S-T : Who's Who In Power Supplies, 2013: Brands Vs. Manufacturers

[profJim]

RealHardTechX PSU Review Database list the ODM/OEM for each psu model and includes links to reviews from major review sites.
You can also check out PSUs Reviews | TechPowerUp Review Database