MSI Z77 GD55 endless boot cycle with 32GB of RAM

Got a Ivy Bridge GD55 with a 3770K and 32GB of G.Skill 1866mhz Sniper RAM - whenever I use more than two sticks at a time, or outside of the 2 and 4 slots my computer refuses to boot up - it powers on, fans whirl for a couple seconds and then the machine resets. All four sticks will boot properly if they're placed in the 2 and 4 slot, but once I add the other two the system refuses to boot up, doesn't even get to POST before restarting itself.

Quote from: xmad
If you need the memory, try a set of corsair dominators.
Quote from: Froggy Gremlin on 03-December-12, 05:49:00
+1, with the addition of Corsair Dominator 'Platinum' as being the best of the best IMHO.
http://www.corsair.com/en/memory-by-product-family/dominator-platinum-ddr3-memory/dominator-platinum-with-corsair-link-connector-1-5v-16-gb-dual-channel-ddr3-memory-kit-cmd16gx3m2a1600c9.html
However ... same speed (1600MHz), same timings (9-9-9-24), same voltage (1.5).
Vengeance 105 bucks, Dominator 180 bucks

Similar Messages

Z77 gd55 Double boot

Hi, i change my mobo from asrock p67 extreme 4 to MSI z77 gd55, after that as i did OC i5 2500k @4.2 auto vcore with offset +25% the computer has always a Double boot at first inclusion, but all parameters what i set operate correctly, pc are stable. so is to be? or i have something badly positioned
With OC i should disable "CPU phase control" or Eup 2013 ? now i have all enable
Bios V1.3
i5 2500k
MSI Z77 gd55
MSI gtx 560 ti
Samsung 830 128gb + Samsung F3 1TB
2 x 4gb Kingston HyperX 1.5v 1333mhz
Be Quiet StraightPower e8 680W

ok! i Disable "EuP 2013" & double boot gone
Quote from: HU16E on 13-May-12, 16:23:28
What method are you using to get the 4.2?
manual 42 x 1000

MSI Z77 GD55 Slow BootingUp when plugged a Cardreader PROBLEM!!!!!!

I have Msi Z77 Gd55 mainboard. I like this mainboard but I have a little problem. If my card reader is connected via usb and also slots are empty, the first booting black screen is waiting for 10-15seconds. If not plugged it counts the codes in 2seconds and starts loading windows rapidly. It waits at B4 debug code for 10-15 secs and then comes A2 and starts normally my windows.
I have tested other brand Card readers also with internal and external models but the problem is the same. I dont have this problem with my other mobos only having at Z77 GD55.
I have disabled the card reader at the bios Booting/usb but didnt solve the problem exactly.
A bios update may solve this problem................

>>Beta BIOSes<<
Try the latest Beta, make sure to use the forum flash tool so that the ME extension of bios is flashed as well.

MSI 990XA-GD55 Mobo: Boots fine, no POST/chance to enter setup

So I have built my own setup here, been running it since May of this last year. I never thought about it until recently, but my computer has never done a POST, or shown me the screen that allows me to get to BIOS or Boot screens. The computer has been running fine, until recently (About a month ago or so) I will be playing any kind of game, and the computer just COMPLETELY crashes. No closing of the game and shutting itself down, no blue screens, just one second the comp is running, and the next it is shut down. So I did a stress test of CPU and GPU to see if they were just overheating or were on their way out the door... But both passed stress tests just fine. I then wanted to check my memory/BIOS, and this is where the no POST and setup screen "clicked" for me... I have been searching everywhere for info on this topic, and the best I can come up with is that there is a problem with my G Skill memory not being recognized? I have DDR3 1600 going, as it shows I can use up to at least 1866 without OC on this mobo. So I went to check what my BIOS said, went to owners manual to see how to get to it (As I never saw the screen where it asks you to press "Delete" or F11), yet in the manual, it says to look for exactly that. So I guess my MAIN question is... How do I get my computer to show me that screen on startup? I have read to reset the jumper to the 2-3 position for 15 seconds on the JBAT, and if that does not work, to pop out the CMOS battery... But wanted to get other opinions before I attempted such things. And in doing this, and possibly getting to the BIOS screen, will that even help me with my original problem of my computer all of a sudden crashing in prolonged "stress" situations? Ie, playing Lord of The Rings Online, I generally have to play for a few hours before it crashes as such. I tried to play Assassins Creed 3 today, and it crashed in the first 10 minutes. This led to my investigation into the GPU (As it only really occurs when playing video games). I was thinking the system was just overheating and auto turning itself off to protect, but after doing the stress tests, GPU stayed pretty stable at 80-85c over an hour, and CPU stayed below 76c on an hour stress test. I even did an hour PSU test, no crash... The only thing I can think would be memory.
I apologize for the multitude of questions and possibly incoherent order in which I wrote, but just trying to get as much pertinent info/process I went through as possible. Thanks in advance for any replies, and will be happy to give any extra info if needed!
Board: MSI 990XA-GD55
Bios: Version 22.2
VGA: XFX HD-687A-ZHFC Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready
PSU: APEVIA ATX-CB700W 700W ATX12V / EPS12V
Intel AMD FX-4100 Zambezi 3.6GHz (3.8GHz Turbo) Socket AM3+ 95W Quad-Core Desktop Processor
MEM: G.SKILL Ripjaws X Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-
HDD: Seagate Barracuda ST2000DM001 2TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive
COOLER: 2x140mm 4kRPM fans
OS: Windows 7 64bit Ultimate
EDIT: After looking through all the left over cases from items I purchased when building this comp, I realize I actually purchased 1866 DDR3, not 1600. But in looking at system properties here, it registers as 1600... But as I said before, I cannot access BIOS to adjust these values. Or maybe that is my problem in first place?

I was wondering about a good voltage for this setup, I think these two are running at 1.6V to start with... So going lower voltage would be ideal then, hmm? Less heat, less power consumption, and you do not have to worry about a decrease in performance? Especially if the latencies are lower, correct?
And I hate to say this, but I have had one of my first "noob" moments ever with this problem... It has been a few months since I took some compressed air to the mobo.. So went and bought some, blasted the heck outta the CPU/GPU/PSU, and the North/South bridges... Ran the same CPU stress test for twice as long, and it hovered at 41c, 42c was my max... *facepalm*. Before, it was even overclocking the CPU to 3.8GHz or so to work with the "data" it was running.. After compressed air, never really went above the 3.6 stock speed. I have never felt like such a goober!
As for the BIOS, turns out the F lock solved the problem, as the delete key is somehow considered a function key for this keyboard I guess. Was able to get into the BIOS, do some tweaking and all. Still nice to know that these newer systems dont beep anymore, and where to start pressing the delete key, instead of mashing it from boot!
Yet again, thanks for the tips, and this bit on memory/RAM is interesting, thank you for that input as well! I do not plan on upgrading the CPU any time soon, unless it is in a weakened state thanks to my neglect.. But I am still fuzzy on RAM details, so the mention of Latency/Voltage helped me in my upgrade search, thank you! If I am understanding it correctly, the 1866 will be future proofed, as well as having the ability for lower latencies compared to 1600? Does my system not go to 1866 because of the CPU or the mobo? As I thought the mobo supported up to 2133 OC.. So most likely the CPU, correct? I am looking at some Mushkin memory, if I get some 1866, I can lower its frequency to 1600, but decrease its latency in the process? ie getting some CL9, and lowering it to 1600 and CL8? How would I go about this, if you do not mind my asking? (If I understand correctly).
Thanks again!
EDIT: I brought up the msi control center, and see that my RAM is actually running at ~1.5V. How can I see the latencies it is running at? It is rated at CL9 at 1866..

MacBook 2010 (white) freezing during boot up with 4 Gb RAM

I have a 13" MacBook 2009 (white) with 4 GB RAM installed by Apple. I upgraded from Leopard to Snow Leopard without a hitch. However, when I upgraded to LION, the computer initially started to freeze sporadically during regular usage then simply froze just before the login screen every time it was rebooted. I took it in to the Apple Store and th Genius staff kept it for 2 days. They tested the RAM. Turns out that the MacBook only recognizes 2 GB of RAM now. Doesn't matter which 2 GB stick I put in which slot, it freezes on boot up. The computer boots up fine with either 2 GB stick in either slot. I would obviously prefer to have the computer run with all 4 GB. I have tried all the steps identified in the article "Mac OS X: Gray screen appears during startup" http://support.apple.com/kb/ts2570 to no avail, including the last step, "Perform an Erase and Install installation of Mac OS X as a last resort." I have searched through the Communities and tried all the suggested fixes. Nada. I have also upgraded to 10.7.3 which came out last week and retried all the steps. Again, nothing. Has anyone had a similar problem and, more importantly, found a fix? FYI, the computer is no longer on Apple Care and so replacing the motherboard is not an option. Thanks!

Hi Linc Davis, here are the results:
MacBook-de-Renee:~ Renee$ kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
MacBook-de-Renee:~ Renee$ sudo launchctl list | sed 1d | awk '!/0x|com\.apple/{print $3}'
org.x.privileged_startx
org.postfix.master
org.ntp.ntpd
org.cups.cupsd
com.vix.cron
com.microsoft.office.licensing.helper
MacBook-de-Renee:~ Renee$ launchctl list | sed 1d | awk '!/0x|com\.apple/{print $3}'
org.x.startx
org.openbsd.ssh-agent
MacBook-de-Renee:~ Renee$ ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta} * L*/Fonts 2> /dev/null
/Library/Components:
/Library/Extensions:
/Library/Frameworks:
AEProfiling.framework
AERegistration.framework
AudioMixEngine.framework
NyxAudioAnalysis.framework
PluginManager.framework
TSLicense.framework
iLifeFaceRecognition.framework
iLifeKit.framework
iLifePageLayout.framework
iLifeSQLAccess.framework
iLifeSlideshow.framework
/Library/Input Methods:
/Library/Internet Plug-Ins:
Flash Player.plugin
Flip4Mac WMV Plugin.plugin
JavaAppletPlugin.plugin
OfficeLiveBrowserPlugin.plugin
Quartz Composer.webplugin
QuickTime Plugin.plugin
SharePointBrowserPlugin.plugin
SharePointWebKitPlugin.webplugin
Silverlight.plugin
flashplayer.xpt
iPhotoPhotocast.plugin
nsIQTScriptablePlugin.xpt
/Library/Keyboard Layouts:
/Library/LaunchAgents:
/Library/LaunchDaemons:
com.apple.remotepairtool.plist
com.microsoft.office.licensing.helper.plist
/Library/PreferencePanes:
Flash Player.prefPane
Flip4Mac WMV.prefPane
/Library/PrivilegedHelperTools:
com.microsoft.office.licensing.helper
/Library/QuickLook:
GBQLGenerator.qlgenerator
iWork.qlgenerator
/Library/QuickTime:
AppleIntermediateCodec.component
AppleMPEG2Codec.component
Flip4Mac WMV Advanced.component
Flip4Mac WMV Export.component
Flip4Mac WMV Import.component
/Library/ScriptingAdditions:
/Library/Spotlight:
GBSpotlightImporter.mdimporter
LogicPro.mdimporter
Microsoft Office.mdimporter
iWork.mdimporter
/Library/StartupItems:
/etc/mach_init.d:
/etc/mach_init_per_login_session.d:
/etc/mach_init_per_user.d:
Library/Address Book Plug-Ins:
Library/Fonts:
Library/Input Methods:
.localized
Library/Internet Plug-Ins:
Library/Keyboard Layouts:
Library/PreferencePanes:
MacBook-de-Renee:~ Renee$ osascript -e 'tell application "System Events" to get name of every login item'
iTunesHelper, Dropbox
MacBook-de-Renee:~ Renee$

Re-boot cycle with new opty 175?

Iv already posted in this thread https://forum-en.msi.com/index.php?topic=101539.40 but its been a couple of weeks since anyone has made a post so thought I would repost here, sorry if this is wrong way to do it.
I installed my new Opty 175, It recognised OK in my system. ACPI MultiProcessor PC with both cores reported under CPU in Device manager, Task Manager showing 2 graphs for both cores, all looks good so far.
Installed the MS Hotfix (never done the PerfEnablePackageIdle registry edit, is this maybe a problem?) then the AMD Optimiser, everything still looking good.
Quote
install Dual Core HotFix V4 --> https://forum-en.msi.com/index.php?topic=103843.0
reboot.
install Dual Core Optimizer --> http://www.amd.com/us-en/assets/content_type/utilities/Setup.exe
reboot, re-test. (check it from device manager:
This is the order I installed the fixes, as per BOSSMANS instructions.
I cant see the MS hotfix KB896256 in ADD/REMOVE programs??
AMD fix is there though.
My Problem is the same as mremulator's described in this thread https://forum-en.msi.com/index.php?topic=101922.0
Quote
No No No, the dual core optimiser and MS Hotfix are NOT compatible.
I made the mistake of installing the two and Windows XP would reboot at desktop. AMD have confirmed this.
I have the desktop reboot problem, though not all the time. Seems to be when I've been in the BIOS (no changes made) or recently I ran Memtest for 16 passes (no errors) and rebooted to the reboot cycle again.
I was thinking of just doing a re-install but after reading the above thread it looks like I will have the same problem after installing both dual core fixes?
I have a Ghost Image of my upgrade before the Dual Core fixes where installed and was thinking of going back to this to try again to fix the reboot cycle problem, will this be a good Idea?
Also, any ideas as to whay the MS Hotfix doesnt show in ADD/REMOVE programs? (show updates is ticked)
Can someone please give me a clear route to Installing the fixes (if they are applicable), and if the registry edit for the MS Hotfix is needed???
Any help is much appreciated
g2k.

Right, I've been at this for nearly 4 hours now.
I've done all below and this is MY findings:
1. Restored my Ghost image (which was made prior to installing any fixes, just the CPU installed)
2. Installed the "AMD Athlon™ 64 X2 Dual Core Processor Driver for Windows XP and Windows Server 2003 Version (x86 and x64 exe) 1.3.2.16" software.
3. Installed the MS Hotfix KB896256, then done testing with the reg files supplied by BOSSKILLER, plus the boot.ini edit (with both "/NoExecute=OptIn"
and "/EXECUTE", absolutely no difference with either).
Done a few reboots, messing around in BIOS, just looking - no changes. All fine when booting up. Happy with that I chose the enable reg entry and saved this as my default.
4. Installed AMD Optimiser, reboot straight to windows = OK
reboot to BIOS and mess around looking at the settings (no changes), reboot and when windows loads - instant reboot and back into my reboot cycle!
continued to mess around rebooting and into BIOS and finaly had to F8 to load the "Last good config that worked" on the list.
5. Uninstalled AMD Optimiser, repeated all the rebooting and BIOS messing around, I CANT get the system to get the reboot cycle error at all now
My conclusion is - dont install the AMD Optimiser! Also I agree with mremulator in this thread: https://forum-en.msi.com/index.php?topic=101922.0
Im using only the MS hotfix with the enabled reg key and its fine like that, installing the AMD one made absolutely no difference for me apart from the reboot problem.
I understand people dont have this problem running both fixes, just thought I would post my findings incase anyone else ran into similar problem as me.
@ BOSSKILLER
can you tell me what the difference is between the BOOT.INI edits " "/NoExecute=OptIn" and /EXECUTE" please??
Also, many thnx for all your help
nice one
g2k.

Msi z77 GD55 POST problem

I thought everything was fine this time. It has been for a month.... Now my pc loops rebooting before BIOS. I have clicked the clear cmos on back. I have disconnected everything except cpu and RAM and nothing is getting to Bios. It is the original bios. Not updated as it worked before... Im so distraught after it was ok... Any ideas please help. Im typing via my phone.

Quote from: xmad on 14-September-12, 08:48:08
What did you do when the Bam! happened?
I5-3570k you mean? If so, that would require v13 to work properly 2012-04-13, but if it worked for 2 months that would be very odd. To verify, you could try and i5 2500k or so: http://www.msi.com/product/mb/Z77A-GD55.html#/?div=CPUSupport but I doubt that is the case.
Next good idea would probably to build the computer on a non-conductive surface (IE brown cardboard)
When you take it out, remove the cpu and inspect the pins very carefully with a bright light and zoom from an hd camera or magnifying glass, if its ok re-seat the cpu and install the cooler, 1 stick ram and psu.
Re-test
If it fails, even though the psu was tested, try a different one. Still fails? Try a different stick of ddr3.. After that it's either the cpu or mobo, my bet would be on the mobo, but to be sure if you can test the cpu in another computer.
Ps: When I say try, I mean borrow, perhaps have a friend with a similar set up bring his computer over to help in testing.
The BAM was turning on my PC in the morning...
Yes I meant the i5, sorry. The motherboard had whatever BIOS it already had when I started it, would not having updated it killed my CPU?
Yes I will try and put it on the some card on the wooden table in my living room.
It has worked without problem and all parts other than the graphics card are brand new.

Endless boot cycle

Hi and thanks for any help... So my 18 month old machine here will not stay powered up. I was having no problems with anything, changed nothing, no overclocking. Now, when I try to power up, the system comes on for about 2 seconds, then shuts down. 5 seconds later, it tries to power up again, the shuts off after 2 seconds. It will do this forever if I let it and will not boot under any circumstances..
I have tried cleaning and reseating every connection. The computer does not see to be overheating. Tried restting CMOS. Initially was able to boot eventually after 25 or more power up attempts and I reinstall Vista but it didn't help. Now it will not boot at all. Tried a new hard drive, didn't help. My PSU is not overloaded. I have nothing but a keyboard and monitor attached currently. Any ideas? Someone's opinion was that the mobo is fried, but I'd love any expert opinion to verify this... Thank you!

What you want is PSU with high amps on +12V single rail. As you can see the CX400W has 30A which is very good for 400W. It's not the watts that matter, it's the +12V amps. Ignore the watts. There are some even cheaper 430-480W PSU's that only have 17-18A on a single +12V rail. I have an Ultra 800W w/4 +12V 20A rails and on a P45 Platinum, Q6600 and 250GTS it died with blown capacitors but was OK with a 9600GT before the VGA change. I have a Corsair VX450W and a TX650 and expect those to last me for a long time to come, maybe even till I drop dead .

MOVED: MSI P67A GD55 not booting

This topic has been moved to Intel Core-iX boards.
https://forum-en.msi.com/index.php?topic=145238.0

Tried all ways to reset cmos, battery out and polarity swapped, jumpers to pos 2/3, cmos clear button, none of these resolved the problem so have RMA'd my board, all I can say is avoid the 1.8a (b10) bios like the plague

MSI Z68a-GD55 (B3) became unable to use 4 ram

My motherboard which i has use for half year, suddenly became unable to use 4 ram simultaneously.
i tried to check each RAM, and i don't think that they are broken. because all of them can work if i place 1 or 2 or 3 of them.
only if i use 4 of them simultaneously, either my PC won't boot up or they boot up, run for some time, freeze, and after restart became unable to boot again.
anyone have any idea why? or how to fix it?
thanks before

>>Use the MSI HQ Forum USB flasher<<
MEMTEST is included with the forum flash tool.
Could be something with the memory controller if the memory checks out ok. Perhaps try setting the dramv slightly higher.
What ram are we talking about?
>>Posting Guide<<

How come my Mac read my Ram as 24 GB when I installed four 8 GB RAM into my system and booted through safe boot, since my Mac won't boot normally with the new Ram, but will only boot if I add the two 2GB with two 8GB?

Oh and I'm using Kingston RAM too this one: http://www.amazon.com/gp/product/B007TGZ4UY/ref=oh_details_o00_s00_i00?ie=UTF8&p sc=1

Macs are extremely sensitive to their ram...even when memory paging is not used, the memory modules still have to be very close in their timing and latency and other specifications. That is why John and Michel and Mike and Mende and I all gave you the same advice, advice based on years of experience. There are a couple memory suppliers who are Mac specialists, know Macs, and test their products to see that they perform correctly in Macs. The two best are OWC and Crucial, plenty of links given above.
We all have said the same thing with regard to other brands, they are not reliable and are regular sources of problems encountered on here. It is very unusual to have positive feedback from users buying ram from Amazon or eBay...we see pretty much a 100% failutre rate from users doing that.
Listen to our advice, get the amount of ram supported by your iMac, from a reliable source. There isn't much else we can tell you as the memory you now have is not working.

MSI Z77-G45 RAM Problems

Hello,
I just built my first PC. I'm running an i7 3770K with the MSI Z77-G45 off an HEC 850w PSU. I'm using RAM I got from a friend, it's G.SKILL PI Series. Right now I have 3 2GB sticks installed, but I'm getting another to max out at 8GB's later this week.
I'm running into a really strange problem. Twice now, when I go to turn on my PC, it goes into an infinite boot cycle, with the computer staying on for only 2 seconds. The only way to fix it is to remove one of the RAM sticks. After I do that the PC boots fine. I can then reinsert the RAM and it recognizes 6GB total. But in the MSI Control Center, it's recognizing the RAM sticks in the wrong DIMM slots. I'm only using DIMM slots 1-3 (The first 3 closest to the CPU). But in the MSI Control Center, it says that I'm using slots 1, 3, and 4. I haven't overclocked the RAM at all. I'm pretty perplexed as to what is happening. Also, when the computer does boot, I don't hear any beeps. Not sure what that means. Help?
Thanks!

3 stick of ram is never a good idea. Best to run with 2. One installed into DIMM 2 & one in DIMM 4.
When you get the 4th stick, I would recommended trying to RMA them for a matched set. Often times even memory of the same model bought at different time is different enough to cause problems.
The 2nd from the CPU and the last from the CPU are the primary DIMMS. (DIMM 1 & DIMM2)

MSI Z77 MPower Ram issues

Hi guys
I recently installed the MSI Z77 MPower after replacing it with the Asrock extreme 4 mobo which i had before, am currently having problems with the RAM it wont boot if i place them in the correct slots for dual channel configurations but if i place them in the last two slots the PC boots up fine.
My Ram is the G Skill Ripjaw X series 1600mhz model number: F3-12800CL8-4GBXM.
Its driving me nuts two motherboards and nothing working, i just hope its not relating to my CPU or something like that.
Please...please guys really need your help with this, because without it running in dual channel configuration my first build feels incomplete due to this problem.
Thanks in advance

Hi guys thanks for the replies and sorry for the late reply has i said before my MSI MPOWER Z77 motherboard is totally brand new and i know for a fact that no bent pins in the cpu socket, from what i am aware of, if my RAM is related due to the type of RAM modules that i am using and you guys are suggesting corsair modules which ones do you guys recommend me getting. You know when i said only slot 3 and 4 only worked could that be in a result of the RAM am using or not....??
Thanks in advance guys

Z77 GD55 - Will run Virtu MVP?

Hello, guys,
I'm looking to buy the MSI Z77 GD55 but the oficial lacking of support to the Virtu MVP technology is holiding me back, but, i saw in some foruns some guys with this motherboard running the Virtu MVP, so, it's really possible to run the Virtu MVP on this motherboard? I'm justing waiting for this confirmation to buy the Z77 GD55, if not, i'm thinking to get the BIOSTAR TZ77XE4

No mention of it on the website. Consider the -GD65.
You can check with MSI technical. >>How to contact MSI.<<
or do a query here http://us.msi.com/service/PreSaleForm/

Nvidia 650x2gig fails in MSI Z77A gd55: need NVidia drop-back card.

Gents:
Running UBUNTU 12.04 under:
Xeon 1240.v2
MSI Z77A gd55 : BIOS V1.2
2x8 gig Crucial ram
320 gig SATA
"ULTRA" 650W PS @ 60 amps on 12 volt rail
Auria 27" 2560x1440 monitor
My legacy gtx9400 vidcard will push the monitor, but my new purpose-bought EVGA 650x2gig fails to generate **any** response (no signal) in the monitor. An EVGA tek said it looked to him like a mobo BIOS/vidcard incompatibility. He advised flashing BIOS; I am very **risk adverse** and never flash BIOS. So assuming the problem is BIOS clashing with vidcard, then I need a downmarket/older vidcard. What is a good -- older -- midmarket Nvidia vidcard ( AMD Linux drivers inferior ) that the V1.2 MSI BIOS can handle?

Thanks for your interest & comments ... I am stumbling about and know it.
Believe me: the NVIDIA chip EVGA _650 vidcard fails totally in my system. So you say I need BIOS V1.5 to run my 1240.v2 ... and I am **not competent** to risk that/any BIOS flash. That's tuff-titty for me tho I get no error messages from my system. Casual *nix benchmarks are respectable. Unless you consider the NVIDIA-650 vidcard failure an "error message". Very well ... I must work around that issue and not arrogantly try to do what I cannot do. I **can** buy ( for less than $150) & install an NVIDIA_550 vidcard ; if I think it will work. That's my question ... given that a legacy GTX_9400 works and the EVGA_650 fails, what likelihood that a last generation NV_550 vidcard works?
Or .. are you telling me that the early BIOS versions for the GD_55 are well&truly a mess and **nothing** may be trusted to work with them. I still will not risk a BIOS flash, but will climb down the vidcard ladder until some legacy part above the GTX_9400 works! Thanks again for your post and info.
Quote from: flobelix on 30-March-13, 06:49:14
Using your current cpu requires at least bios version 1.5: http://www.msi.com/product/mb/Z77A-GD55.html#/?div=CPUSupport as you have been told before. You may run into problems although it might look ok now.
http://www.msi.com/product/mb/Z77A-GD55.html#/?div=BIOS
I don't know what a NV_550 should be but your GTX650 should work fine with a current bios.

MSI Z77 GD55 endless boot cycle with 32GB of RAM

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