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ASRock z77 Pro3 No Ram error with Ram

post #1 of 6
Thread Starter 
I'm helping a friend make a build, he's gone with ASRock z77 Pro3. He builds the system out of the case to test components first - ie just CPU, MB, Ram, and PSU. The board gives him a No Ram Detected error with the ram installed regardless of configuration - he has dual channel sticks, and he tried both sticks together and each separately in every single slot combination on the MB. The MB will not post - monitor just sits there with no signal. CPU fan does spin up, and we even tried mounting the GPU and the GPU fan spun up. The Ram is on the compatibility list.

The MB has a separate error for "Bad Ram". He bought the z77 Pro3 from newegg as an open box, so I assumed that the probability was good that the MB had a fault in that it wasn't able to see the Ram slots, especially since neither Ram stick worked individually. So he sent it back.

He purchased the exact same MB but brand new this time. It is now giving exactly the same error - which may suggest it is the Ram that is bad? It seems to me that the probability of both sticks being bad simultaneously would be low - and why then would it not give the "bad ram" error? - but I assume that the probability of both MBs being bad in exactly the same way is also low.

Now - I can take the Ram out of my rig and test it in his MB (it is compatible) - but will I fry my Ram if it turns out the MB is the problem?

Any suggestions on the best way to trouble-shoot this would be very much appreciated. Thanks.
post #2 of 6
First off no you won't fry RAM if you test it like you want. RAM is very rarely dead on arrival like you thought. Since the memory controller is located on the processor nowadays, it could be something like bent CPU socket pins, processor is somehow misaligned (probably hard to do since you have to line up with notches) or a weird amount of pressure from the heatsink to cause a problem like that.

Also the days of worrying about RAM booting pretty much doesn't exist anymore. Even if you buy crazy 2400mhz sticks or something, it will still boot in pretty much any board because it's just going to look for a low JEDEC profile like 1333mhz or something so it has a wide range of compatibility across all motherboard/cpu combinations. So I don't think this would be an issue of like, oh you need to install lower speed memory, enter BIOS and set timings, and then put in your proper sticks.
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Eff You Intel
(14 items)
 
FreeNAS
(9 items)
 
Beast
(14 items)
 
CPUMotherboardGraphicsRAM
1700X PSTATE 3.8ghz @ 1.3125v AsRock X370 Taichi Beta BIOS 3.20a Sapphire R9 Fury Tri-X OC F4-3200C14D-32GTZR 
Hard DriveOptical DriveCoolingOS
Plextor M8Se(G) 1TB People still use these? lol Cryorig H7 push/pull Winblows 10 Professional X64 
MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-860XP2 Fractal Design Define C TG 
MouseMouse Pad
Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
Intel Xeon E3-1245 v5 SuperMicro X11SSM-F-O C236 Integrated 2 x 16GB Kingston ValueRAM ECC KVR21E15D8/16 
Hard DriveCoolingOSPower
5 x 8TB Seagate IronWolf Pro in ZF2 Array CoolerMaster Hyper 212 Evo FreeNAS 11 EVGA SuperNOVA G2 550W Gold 
Case
Fractal Design Node 804 
CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
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post #3 of 6
Thread Starter 
Ok - we tested his RAM in my computer and the RAM is good... which means that it is likely the processor. I looked up the processor, Pentium G2020, and found an interesting tidbit on this site:

http://cpuboss.com/cpus/Intel-Pentium-G2020-vs-Intel-Core-i3-3220

At the bottom it suggests the memory controller is set up for 1333 MHz, but not for 1600 MHz on the Pentium G2020. I'm not sure why the speed of the RAM matters for the controller, and my friend did buy 1333 MHz RAM.

Before he sends the CPU back, is it possible that the ASRock z77 Pro3 is somehow auto-setting the RAM speed to something other than 1333, even though this is the default rating of the RAM, and then the CPU can't handle it? I have no idea how to reset something like this since we can't even get into the BIOS - again, the MB won't post at all and gives the missing RAM error (3 long beeps).

Also - we double checked that his CPU is supported by the ASRock z77 Pro3:

1155 Pentium G2020(P0) Ivy Bridge 2.9GHz BCLK 100MHz 3MB 55W P1.60

http://www.asrock.com/mb/Intel/Z77%20Pro3/?cat=CPU

and we even double checked the stepping on his CPU, it is P0 and is supported. However, I note above that it is only supported after BIOS version P1.60. If the BIOS version is not up-to-date and thus the CPU isn't supported, how does one get into the BIOS to find out what version one has if the CPU won't work? Having a CPU BIOS support version seems like a catch 22 - if it isn't the right version you can never change it.

Thanks.
post #4 of 6
Thread Starter 
I forgot to mention that the pins on the socket 1155 are on the motherboard, not the CPU. We checked the pins carefully and they all look the same (ie normal) ... the CPU only has bonding pads on its lower side, so there is nothing physical to damage.
post #5 of 6
Thread Starter 
I note for anyone who might read this thread in the future, I found the following threads discussing the problem of BIOS version compatibility with processors:

http://www.tomshardware.com/forum/320133-30-asrock-pro3-support

http://www.motherboardpoint.com/flash-bios-without-cpu-t170148.html
post #6 of 6
Thread Starter 
If anyone is able to offer help on this issue, it would be appreciated. We still have not solved the problem.

We tested the memory in my rig, it is good.

He bought a new ASRock z77 Pro3 motherboard and got the same no RAM error.

He bought a new processor, this time the G2030 because ASROCK's site suggested that all bios versions should work, and he got the same error.

He bought another new motherboard, this time an ASUS, and he got the same error.

How is this possible? Is the PSU not supplying enough power? I think it is 380W.

Thanks.
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