4 post beeps in all ram slots, 3 beeps without ram

Basho · Jun 16, 2014

Hi, first off, my build:

Mb: asrock z77 pro3
Cpu: Intel i3 2120
Gpu: Asus Radeon HD 7750 1gb
OS: 64bit win7
Psu: can't recall brand but it is a few years old.

Recently my computer stopped working and instead gave 4 post beeps on startup, no splash screen, then restarts, and repeats.

I investigated and found that 4 beeps (http://www.bioscentral.com/beepcodes/amibeep.htm) means system timer failure. Which i believe could mean psu, mobo or ram issues. I removed the ram and started it up, getting 3 long beeps which means there's no ram inserted. Is this a sign the mobo is okay and the ram is not?
I also tested every slot with my only single stick of ram, getting the same beeps in all slots.

I do not have another stick to test it. If i should test it with other ram, I can buy one or borrow one.

Any help is greatly appreciated

ksham · Jun 16, 2014

The first thing is to make sure your motherboard is properly mounted onto the standoff screws.

giovase · Jun 16, 2014

Try unplugging it from the wall and letting it rest for good 10 minutes, then try again with the RAM module in the first slot closest to the CPU.

Basho · Jun 16, 2014

ksham :

it was working for months, it's possible it could have adjusted itself? I have not moved the computer before it stopped working

Basho · Jun 16, 2014

giovase :

My build was sitting for a few hours before I plugged it back in and tried the slots starting with the one closest to the CPU. No change.

Basho · Jun 21, 2014

If the motherboard is bad, would it still have system timer failure codes without ram inserted?

ksham · Jun 21, 2014

You cannot boot (no POST) if no RAM is inserted. But you would get beeps and most likely a black screen. I would categorize it as a memory error. Can you test with your monitor plugged directly into the motherboard and remove your graphics card?

Basho · Jun 21, 2014

ksham :

The gpu has been out for every test.
What else can i do?

ksham · Jun 21, 2014

Can you burn a Linux LiveCD ISO to a CD or USB flash drive and boot into them? Any issues when using the Linux OS?

Basho · Jun 21, 2014

How would i boot that if im getting system timer failure immediately on startup?

ksham · Jun 21, 2014

Process of elimination, I would first check to see if you can get another RAM module and see if it boots up. If so, then that's a cheap replacement. If that's also not working, then it's probably the motherboard issue.

Basho · Jun 21, 2014

not being able to boot up certainly eliminates that lol. I have 2x1gb sticks but i dont know if they work either.
I've had this z77 pro3 mobo for almost a year, would Asrock replace it?

ksham · Jun 22, 2014

You can't boot up with RAM so if your RAM stick doesn't work, you won't be able to boot up. The ASRock Z77 Pro3 comes with a 3 year warranty but make sure it is the motherboard issue. If you send it back and it turns out to NOT be the motherboard's problem, ASRock will charge you for their service.

Basho · Jun 22, 2014

Yeah, no ram means no boot. knew that.
but, I did not know about asrock service. I'll be sure to check each part with a friend if i can

Basho · Jun 22, 2014

http://www.pcguide.com/ts/x/sys/beep/amiB4-c.html
i don't know the reliability of this site or how likely STF is a mobo problem, but since mine isn't new, is it unusual to have system timer failure after 5 months of smooth sailing?

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