Z77A-G45 boot loop

Today when I tried to turn on my 2 year old computer, the computer just went into a boot loop, meaning it boots on for 7-8 seconds, shuts off, and starts booting again. Nothing shows on the screen.
I've searched around, and it seems like a fairly common problem, but I have not been able to fix it.
What I have done so far, is
* CMOS reset
* Switching the RAM sticks around
* Removing my GPUs
* Removing just about everything not essential to the boot (extra hdds, cd-rom and so on)
Nothing seems to fix the problem.
My setup is
* Intel i7 3770K
* 16 GB Corsair ddr3 ram
* 2 x Nvidia gtx 580
* 120 GB ssd
* Corsair HX850 PSU
* And some additional hard drives
Does anyone have any suggestions?
Cheers

i'm assuming you don't get no boot drive message. regardless, make certain you verify your boot drive is correct> mine resets at times and does that more or less. you can try any other boot drive to see whether that is the problem. ie try to boot from a dvd first to make sure your not totally in trouble. if you another machine ghost present boot drive to other drive and see whats up. actually you can just slap the boot drive into any other machine or use a sata to usb adapter and make sure you can read it. they do fail at times. i forget the key for msi boards for boot setup but f1 will get u there i believe. ps u have ssd too so thats likely it if u had a power outage recently.
good luck m8

Similar Messages

MSI Z77A G45 boot loop

Hi everyone!
I just tried to flash my MSI Z77A G45 today from the bios version 2.1 to 2.A.
I had blackscreens all the time when i tried to flash it with the M-FLASH utility from my bios.
Then everything just started normaly (after each blackscreen), but there wasn't any update, i tried to force the update with LiveUpdate.
And now when i try to start the computer, i just get a blackscreen (no signal for the monitor) and a boot loop.
It just stops and reboot after 10s.
My hardware is working perfectly, i think this is from a corrupted bios issue.
Which things i tried:
- Doing a clear CMOS (nothing happens)
- Removing the CMOS battery for 10 minutes (the reboot loop stopped, but there was not any display, i restarted the PC then and the reboot loop started again)
- Cleaning my PC (from dust and things like that), it was not efficient at all
- Booting from a USB key with the bios in, and formated as FAT32, nothing happens too. It doesn't recognize the USB key and anything else (keypad etc.) so the blackscreen was there again.
My Hardware:
CPU: Intel Core i5 3570 3.4 Ghz
Motherboard: MSI Z77A G45
GPU: None (Intel graphics 4000)
RAM: 2x4Gb Corsair Vengeance
HDD: Crucial M4 SSD 64Gb
Power supply: Corsair 850W
Do you think that i need to send my mother board back to the RMA?
I hope you will be able to help me, or find a solution
Thanks in advance

You can try the steps found here https://forum-en.msi.com/index.php?topic=119375.0
Otherwise, it is RMA time.
Next time use the forum flash tool and archives found on the forums.

MSI Z77A-G45 Boot Loop problem

Hi,
I recently built my computer 2-3 months ago. It worked fine until a couple days ago it started boot looping. It doesn't even get to BIOS. I think it's my motherboard gone bad. I switched CPU and memory with another computer and it works fine but when i put it in my computer it boot loops again. before i go through this whole warranty ordeal does anyone have any ideas i could try? Thanks!

>>Posting Guide<< please list all the components in your system!
Motherboard?
CPU?
RAM?
GPU (if you have a dedicated graphics card)?
PSU (Power Supply Unit - please list the +12v rail/s amperage rating/s on its data sheet)?
what you have described is usually either a Bad Motherboard or a Inadequate/overstressed PSU! so the components list of what you used to build the system is Very important to determine what exactly has gone wrong.

MSI Z77a G43 boot loop

Hi,
I have read all issues about boot loop problems, but nothing fit mine.
I bought MB MS Z77A G43 and Core i5 3570K. After building it, the computer is restarting again again.
I clear the CMOS, boot and in the monitor it says, that setting was reset to default, it shows my CPU,RAM,HDD etc. and it gives me 2 choices:
1) Press F1 to run setup
2) Press F2 to continue.
I tries several times both option, but after pressing the button F1 or F2, the computer starts to boot loop again. I cant go to the bios. Dont know if the problem is CPU or MB. I tried another power supply, but it didnt solve it. Any ideas?
Thx for helping

Hello again,
I have change CPU and MB for the new ones, but problem still occurs. I found an information on the web, that i5 3570k supports only RAM with power consumption max 1.5V. I have Zeppelin DDR3 4GB kit (2x2GB) 1600Mhz, but when I clear the CMOS and boot, the MB says that I have only 1333Mhz. That means the RAMS has more then 1.5V?
What do u think? The problem is RAM, which are not supported by CPU?

Re: MSI Z77A-GD65 Boot loop

ok then if you have tried other memory then its either the CPU (its not impossible and i have seen 5-6 dead CPU's recently) or Motherboard that has failed and both are possible! (unless you can test one of the 2 you have to blindly either get a RMA on ...

Quote from: Svet on Yesterday at 15:28:15you already using UEFI compatible vbios TV303MH.132
hi Svet, thanks for the reply.
I don't have experience in flashing vBios of v...

Z77A-G45 start up-shut down loop with more than 1 stick RAM

New Build, personal use and doing it myself:
BOARD: MSI Z77A-G45
BIOS: *?* click-bios reports "E7752IMS V2.5", but "MS-7752 VER: 1.4" printed on board?
PSU: Thermaltake 850-watt Black Widow 69A 12v rail
CPU: Intel Core i7-3770K BX80667i73770K - Quad Core, 8MB L3 Cache, 3.50GHz, 77W, Unlocked, fan included, no extra cooler yet
MEM: Corsair Vengeance CMZ8GX3M2A1600C9B 2x4GB 1600 MHz, 9-9-9-24, PC3-12800, 1.5V
HDD: WD Blue WD10EALX 1TB, SATA 6Gbs, 7200RPM, 32MB Cache
CASE: Thermaltake VN770M1W2N Overseer RX-I Full Tower
OS: Win7 Pro 64-bit
System bought as bundle including the 2x4GB Corsair RAM. Assembly went well but took me a long time to make sure I had it all right. Then, nothing happened at power-up, no lights or anything. My first reaction was to replace the included Thermaltake power supply (700 watt 52A 12volt rail) - I disconnected all power to the unit and removed the original psu and, on a whim, I booted up with the original power supply outside the case and the lights came on with the psu laying on it's side! Got the start-up and shut-down loop (lights up and spins all fans for a few seconds, then shuts down and repeats ad infinitum), which I was not expecting. Replaced the original power supply with the Black Widow (specs listed above) and got same shut-down loop.
Started checking the memory sticks one at a time in DIMM2, each produced that shut-down loop. Also tried with two sticks of Patriot Viper 3 PVI316G160C9K 2x8GB 1600 MHz, 9-9-9-24, PC3-12800, 1.5V (which doesn't appear on MSI's compatible list...but I had it handy) Then, With the last 8GB Patriot stick in DIMM2, I finally let it go through that shut-down loop 5-6 times out of frustration, and then it suddenly powered up "normally"!
I took advantage and have smoothly installed Win7 Pro, and mobo drivers from CD, no glitches, USB working fine. Then tested each stick - all 4 RAM sticks work individually in DIMM2, but the board will not accept a 2nd stick in 4 without that same shut-down loop (tried using either matched pairs). Manual specifies using DIMM2 and 4 (which are the black ones) for dual channel. Have also tried slots 1 and 3 (blue) with same shut-down loop results, no BSOD or error codes, not even any beeps. Computer boots normally and runs Win7 just fine with one 8GB stick in DIMM2. Also boots Windows and runs fine with one 4GB Corair chip in DIMM2.
Have done CMOS clears and also re-seated the cpu and heatsink/fan, and all pins and board connections looked OK.
Have some problem getting into the BIOS screen to look at things - seems to boot up so fast with a re-start that Delete key and F11 don't quite catch before Windows starts (8-year-old Logitech USB keyboard?). Have to completely power down and start up to get into BIOS, but that doesn't always work either. System recognized the memory change to the Corsair stick, but the screen went by so quick I couldn't catch it to get into BIOS.
Questions:
1) I've searched this board and read for hours about similar shut-down loops problems, but either nothing seems to match my particular quandary or I don't know what to look for. I don't understand what's happening with this shut-down loop - since all four sticks work individually in DIMM2, could DIMM4 slot be defective and I need to RMA the board?
2) I have not yet removed the board and tried to start it outside the case - could a short be causing the 2nd slot to malfunction? Standoffs are built into the case but they didn't seem too low, and the amount of standoffs matched the mobo mounting holes wiwth nothing else protruding. It's a really solid board that did not bend when being attached. It's also possible to look down behind the board with the front cover off and see that nothing is touching it. Will breadboard it next, since I have to take it out, anyway.
3) Where exactly is the Bios version printed on the board? Click Bios reports version as 2.5 but appears that 1.4 is marked on the board. Have done no updates of any kind, only thing I did was disable the splash screen so I could see POST (like I could read that fast...!). Do I need to contact MSI to find out what Bios version actually shipped with this board? It's OK if I got an older board with updated BIOS, but it's confusing when something different appears to be printed on board.
Additional info: Phase lights - LED is lit and all lights flashed at boot-up. CPU temp running for three hours idle is steady 37-38C, mainboard system temp 25C. Went with a larger power supply because I intend to use Crossfire and more drives in the near future, but using onboard video for now. System to be used for graphics/video processing with multiple programs running.
I'm currently working from an ASUS M3A78-CM board with AMD Phenom 9650 2.4 GHz. I've never dealt with an MSI or an Intel system before, and the Click-Bios is something new to me. Alas, I'm not an expert, but I've followed the basic steps I knew. What did I do wrong, overlook or just plain don't know? I sure would appreciate another opinion before I give up. I'm amazed at the speed of this motherboard/CPU combo - it's probably more than I need, but I'm intrigued to figure it out.
Looking forward to those opinions,
Jilliebob

Quote
Do this, and while it is in the open re-examine your cpu pins w/ a bight light and hd zoom or a magnifying glass.
Thanks, xmad, I'll look at th CPU again tomorrow/next day under the glass when I take the board out. I already checked them under magnification and was leaning toward a funky board, but it never hurts to re-check. Eyesight is not what it used to be, for sure (I miss DOS, if that's a clue...). Don't want to flash the BIOS if not necessary, since it runs Windows fine and everything works except that RAM.
Bernhard, I don't have CPU-Z installed on that machine and don't want to install anything else until it's working normally. I'd never seen Click-Bios before and just need to get over my initial suspicion of something new! Also learn my way around it before I change anything. I'd never encountered a board reporting a bios different than printed on it. I've never messed with manual memory settings or done more overclocking than just a little exploratory and suprisingly successful nudge - if you could point me toward a good basic explaination of all those settings, I could learn from there.
Appreciate your input very much.
Have learned a lot just reading the threads here for the last few days. This is the best forum I've ever encountered. I'll report back - some suggestions in other posts resembling my problem ended with no resolution, and that's a shame because one doesn't know if it worked or not.

Brand-new Z77A G45 not booting

Hello all. Just started putting a new build together the other day, using the Z77A G45. When I went to boot it up for the first time, it gave me the "Military Class III" splash screen, with the prompts to switch to POST, start BIOS setup, etc. However, pressing any of the keys doesn't do anything, and it shuts down after about twenty seconds or so. The CPU phase leds all turn on for a few seconds after it's powered on, but after that only the first one remains lit.
I thought it might be because it wasn't recognizing my USB keyboard, but I had the same problem even when I used the PS/2 converter that came with the keyboard. I tried clearing the CMOS, and it gave me a screen showing that it recognized everything plugged into the board, and prompted me to hit F1 to continue setup, which worked, but from there all I got was a black screen with an "underscore" in the upper left hand corner. Rebooting with only one stick of RAM didn't change the problem, and I've tried all the USB ports, with similar results.
I'm thinking that the problem lies in the CPU being damaged during installation, but there don't seem to be any bent pins.
Here's the build:
CPU - Intel Core i3-3220 3.3GHz Dual-Core
Motherboard - MSI Z77A-G45 ATX LGA1155
Memory - Kingston Blu Red Series 8GB (2 x 4GB) DDR3-1333
Storage - Seagate Barracuda 1TB 3.5" 7200RPM
Video Card - MSI GeForce GTX 650 Ti Boost 2GB
Case - NZXT Tempest 410 ATX Mid Tower
Power Supply - SeaSonic 520W ATX12V / EPS12V
Operating System - Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit)
Monitor - Asus VS238H-P 23.0"
Any help or suggestions would be greatly appreciated.

Quote from: dude on 17-November-13, 06:36:40
Try it without any ram, you should get a beep. If not it seems to be RMA time.
This is not true depending on the board and bios version. Not all boards/ bios versions beep at all.

Lenovo G45-50 boot loop.

My Lenovo G45-50 has been stuck for days at a time on a boot loop. It starts up, the Lenovo logo comes on the screen, and then reboots again. After about 3 days of this, sometimes it boots up fully. However, as soon as I have to restart (due to updates) or shut down, it will go through this cycle again.
Anyone else have this issue, or know how to have it fixed?

bornxfree wrote:
Thank you CBHendricks,
I did try the reset, but to no avail. Nothing happened. My computer finally turned on this morning, so I tried to contact support, however it is apparently not available in my country yet (Canada). When opened my laptop, there was an alert about "the charger not being able to provide enough power", or something of that nature. I had never seen it before, would the lack of charging capabilities be causing my issue?
Hmm... no support in Canda? That seems rather strange.... It does sound like there is a problem or two with the hardware of your system and it needs to be serviced. Have you spoken to Lenovo support by phone? I would suggest doing so and discuss warranty options, and confirm service center locations. I am certain that I have seen Canada in the list of supported countiries.
Cheers.

Z97-G45 Gaming boot loop issue

Hey everyone,
My new build seems to be giving me problems. I put everything together, imaged my SSD and everything seemed to be working fine at first. I had games running and was getting excellent performance with everything on stock settings. Then I started to sync my Plex media server with all it's contents and my computer froze. The keyboard/mouse were non-responsive so frustratingly I reset the computer manually.
Now my computer fans will boot up and then immediately turn back off.
So far I've:
-Disconnected everything except my CPU/RAM and PSU -- I got the same boot loop response
-Initially, I was able to get the system to the BIOS by changing the configuration of the RAM. Now that no longer works. It would require me to change the RAM multiple times, and the system by random chance would sometimes boot to the BIOS. It would freeze if I tried to get into the OS.
-I just exchanged the PSU with a known working component. (Both 750W)
-I reseated the CPU and ensured I had a proper connection between the heat sink and CPU
There doesn't seem to be any physical degradation of the motherboard.
Here's the specs:
MSI Z97-G45 Gaming Motherboard BIOS v2.0
Intel Core i7-4770k processor
Corsair H70 CPU heat sink
16GB Crucial Ballistix Tactical (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600(I've tried both w/ XMP on and off when I can get the system to boot)
Nvidia Gefore GTX 750 TI Graphics Card (also tried onboard DVI connections)
Corsair HX750W (tried also my Thermaltake 750W)
Zowie Mechanical Keyboard
Zowie optical mouse
Windows 7 Ultimate Edition 64-Bit
1x 250GB Western Digital Black
1x 1TB Western Digital Black
1x 120GB Corsair Force 3 SSD (Broken in my attempts to plug/unplug it and the terminals snapped -- SOOOO frustrated at that. I have the 1TB Western Digital imaged with the same OS now.)
Hopefully you guys have an idea to try before I RMA it...

It's used to clear the CMOS, so no, it should not have a jumper on it. Most use a flat tip screwdriver to short it to clear CMOS, or the clear CMOS button at the I/O plate if one is provided there.

Boot Loop Issues - MSI Z77A-GD65 - Solved

Picked myself up an MSI Z77A-GD65 as well as some Kingston 2x 4GB RAM sticks with a i5 2500k.
After getting everything installed, it just boot-loops on me showing me no boot menu, with a debug code of 55.
If I take out one of the RAM sticks and just use the #2 slot, it boots fine (but after starting windows, it flashes some blue screen and it boots again. I'm thinking that's only because I haven't installed any drivers and still have the old drivers from my motherboard. Yes/No?).
But as soon as I put the second stick in, it will not boot (swapped sticks and it boots fine with one stick). I've tried 1/3 and 2/4 and the only slot that seems to work is #2 (#4 slot won't boot with one stick in it). Tried each stick in each slot. 1/2 work, but 3/4 will not
I'm guessing this isn't a RAM issue but a MOBO issue? I sense an RMA in my future....

Quote from: XFM on 24-December-12, 08:29:56
Can you take a good quality, in focus hi-rez picture of the socket and post it so we can see what you are talking about?
I would if I could. Best way I can describe it is that the pins are all kind of bent at an angle (imagine an L shape, but upside down). Now take the bottom of the L (where it's small and turns) and kind of bend that facing the ceiling. It's kind of like that...
Quote from: Froggy Gremlin on 24-December-12, 08:30:08
Why is this thread in the Intel duo/quad section?
What are the amps on the PSU +12V rail(s)? And how old is it? Suggest to keep just the one RAM stick in the primary DIMM slot and do a fresh OS install with the Mode set to AHCI. BTW, what is the OS? 32 or 64 bit?
Good question. I think I was very tired/annoyed when I made this, and I guess I didn't look properly. If any mods can move it, or need me to take it down, I can.
PSU - http://www.newegg.com/Product/Product.aspx?Item=N82E16817703005
I don't have a problem doing a fresh install, but would like to make sure it's nothing else before hand. If I do a fresh install, and I still have to RMA the board, I would have to do another one to put all my old stuff back in, and I wouldn't really have a PC until the new board came (I mean I could still use it, but would have to re-install stuff and it seems like a bit of a pain if I don't *have to).
64-bit OS

Msi z77a-g45 - BIOS not saving loop

Hi there, I picked up a msi z77a-g45 and an i5 3750k, 4x4GB Kingston RAM, etc etc.
I'm an experienced system builder, but this is my first build in i5 land, or actually on an MSI board. The issue I've got is when I first booted, it shows the "CPU or memory changed !!" and to press F1 for setup or F2 to load defaults and continue. Cool, expected on first boot. I enter setup, get the BIOS how I want it, save and reboot, it immediately shuts my box off and 2 seconds later, back on. All good so far.
But it again prompts the "CPU or memory changed !!" warning. Err...it showed my CPU properly in the BIOS, same with memory.
I've now gone through it quite a few times, and it always re-prompts me to go into the BIOS again or F2 to use defaults.
Doing the F2 deal will get me into Windows, but upon reboot I get the error again and have to F2 again just to boot.
I've tried using Click BIOS to make changes, it however doesn't show any memory in here (updated to latest Click BIOS version), but does show my CPU fine. Shows 0GB.
I've also updated my BIOS to release 25 this morning, no change.
Anyone else have this happen at all? I suppose my next steps will be to drop to a single stick of memory, see if that goes, or do a full 'remove battery' cmos clear. I've tried pushing the clear button on back of mobo but didn't seem to do anything.
Would really appreciate any ideas, thanks all!

Quote from: Psych on 26-July-12, 03:43:47
Hi there, I picked up a msi z77a-g45 and an i5 3750k, 4x4GB Kingston RAM, etc etc.
I'm an experienced system builder, but this is my first build in i5 land, or actually on an MSI board. The issue I've got is when I first booted, it shows the "CPU or memory changed !!" and to press F1 for setup or F2 to load defaults and continue. Cool, expected on first boot. I enter setup, get the BIOS how I want it, save and reboot, it immediately shuts my box off and 2 seconds later, back on. All good so far.
But it again prompts the "CPU or memory changed !!" warning. Err...it showed my CPU properly in the BIOS, same with memory.
I've now gone through it quite a few times, and it always re-prompts me to go into the BIOS again or F2 to use defaults.
Doing the F2 deal will get me into Windows, but upon reboot I get the error again and have to F2 again just to boot.
I've tried using Click BIOS to make changes, it however doesn't show any memory in here (updated to latest Click BIOS version), but does show my CPU fine. Shows 0GB.
I've also updated my BIOS to release 25 this morning, no change.
Anyone else have this happen at all? I suppose my next steps will be to drop to a single stick of memory, see if that goes, or do a full 'remove battery' cmos clear. I've tried pushing the clear button on back of mobo but didn't seem to do anything.
Would really appreciate any ideas, thanks all!
Read my "thread" : https://forum-en.msi.com/index.php?topic=160606.0

(Z77A-G45) HELP! Computer shut down while working and... never boot up again

Assembled the other day but...today it was working fine. Sudenly shut down and never boot up again.
(Z77A-G45 thunderbolt)
i5-3330 3GHz
gpu gigabyte gtx560
Ram 2x4G (High-performance 8GB Vengeance Dual Channel Kit, 1600MHz, 9-9-9-24, 1.5V)
psu Silencer MkII 750W
Any thoughts?
Thanks

Voltage at 24 pin and 8 pin connectors are ok and under the tolerance as I saw here http://pcsupport.about.com/od/insidethepc/a/power-supply-voltage-tolerance.htm
I will check the other rails.
Hmmm... starting to suspect that the cause is something else.
Missed the beeps in the past.
This mobo (z77a-g45) never emitted a single one.
Not even at startup when it was ok!
Oh man!
The computer was running well and then suddenly screen went black, no disks activity, no keyboard response, no video, no reset switch working. Fans continue spinning.
Had to pull the plug to stop the fans. Then plug it again but no boot. Just cpu phase led 1 is lit, fans activity and nothing more. No welcome screen, no disks activity!
I will try to test the ram on another computer.
Any other clues?
Thkx

MSI z77a-G45 Infinite Reboot Loop

Hello,
Here are my system specs:
Core i5 3570K
Hyper212 Plus
Intel 330 180 GB SSD (with OS on it)
WD 1TB Black (for data)
MSI z77a-G45 motherboard
G.Skill Ripjaws 8 GB RAM
EVGA GTX 660 FTW Signature 2
Corsair TX650m PSU
Lite-on iHAS124-04 Optical DVD Drive
Corsair 200R case
I should mention the following up front: I don't know what is causing my problem, but my guess is it's either PSU or motherboard.
Nothing in my system is overclocked (except for the fact that my GTX 660 card comes factory OC'd). Here is my issue. Yesterday, I shut down my computer and everything was normal. I didn't change anything at all. Today in the evening, I tried to power on my computer, and it simply goes into an infinite reboot loop. I don't see anything on the monitor, nothing comes up. The computer powers on for about 10 seconds, and then powers off for about 5-6 seconds, and it keeps repeating this process. Actually getting this process to stop is a bit tricky (I think I have to hold down the power button for several seconds when the computer is off). Does anyone have any ideas? I've tried a few things, like checking to make sure the 8 pin and 24 pin cables are tight. I've tried resetting CMOS and taking out the CMOS battery. Ideas? Thank you.

Hi guys. I know this thread is 2 and a half months old but I need to find a solution to this problem. It may have been better to start a new thread, excuse me for not doing it as my problem is quite similar.
Well, my situation is a bit different and I will explain it shortly but first I'll give you my PC specs.
MSI Z77A-G45
Intel i5-3570
Corsair DDR3 8GB (2x4)Kit 1600MHz Vengeance
Nvidia GeForce 9800GT
So when I assembled my PC I put one RAM in DIMM2 and the other in DIMM4. This led to an infinite reboot loop. The fans and the leds were working but nothing was displayed on the screen. After doing some tests removing and inserting again the RAMs with different combinations I came to the conclusion that this infinite reboot loop is occurring when a RAM is inserted either in DIMM1 or DIMM2. My PC works fine if I connect the RAMs in DIMM3 and DIMM4 but not with the DIMM1-DIMM3, DIMM1-DIMM4, DIMM2-DIMM3, DIMM2-DIMM4 combinations.
At first I thought one of my RAMs might be corrupt but after the tests I see that both work fine and I'm starting to believe that the Motherboard has the problem.
Any ideas? This is really frustrating.

Z77A-G45 only integrated graphics boot

Hey all, just upgraded mobo and cpu and so far its only working on the on-board graphics, when i have the monitor connected to a card it wont start boot at all, it comes on, lights and fans whirring but it wont enter the boot screen just stays blank with light on standby, have tried with 2 different cards besides my main and in different pci slots, nada, same thing.
I did have one other problem now fixed but i dont know if relevent to this, when i first turned the newly built comp on and had the above problem i tried the onboard graphics method, it booted but then crashed at windows startup with the x07b error, which after some checking is a hard disk error, i set the sata mode to IDE and it worked, can now go into windows as normal but still only on the onboard graphics.
Any help/advice is appreciated, thanks.
Motherboard: Z77A-G45
CPU: i5-3570k
RAM: Crucial Ballistix BLS2CP4G3D
Graphics card: Gigabyte GeForce GTX 670 Windforce 3X 2048MB (tried a 8800 GTX & something else)
PSU: Enermax Galaxy 850w

Quote from: Froggy Gremlin on 22-March-13, 13:22:29
If you are migrating a HDD from another machine with a previous OS on it, it is not going to work correctly. It needs to be a fresh install. Z77's default to AHCI mode.
thanks for identifying the problem to that little curio, a OS reinstall hmm was trying to avoid that but now I know what the prob is and can tackle it once things are settled.
To get the discrete card to work, change the graphics setting from IGD to PEG, Save and Exit and then hard shut down. Install the discrete card connecting it's PCI-E power, connect the monitor to the discrete card, start the system and see if it now shows graphics.
tried this and alas it hasn't worked, I turn on and go into bios, under advanced section the integrated graphics configuration subsection and the initiate graphic adapter line, I change it from IGD to PEG, click save and exit, while its rebooting I yank out power cable (you said hard shut down), clear power (wait a min and press power button down), install graphics card and connect monitor, reconnect power cable power on and...the same thing.
It was originally actually on PEG so I changed it, saved and let it go into windows to do clean shut down to try your method, did the same thing when it failed first time, have tried a few times now, even tried the method but with changing from PEG to IGD, just in-case of the outside chance the order was a typo on your part.

Z77A-G45, A2 Boot hang!

Main Board: MSI Z77A-G45
Bios Version: (Latest)
Video Card: ASUS GTX660 OC
PSU: Thermaltake TR2 (600W)
12v rail Rating of listed PSU: Bronze(?)
CPU: Intel 15 3570K
Memory: 16GB Kingston HyperX
SSD/ HDD: 2TB Seagate (Mac and Windows) 3TB Western Digital (exFAT, Data)
CPU COOLER: Corsair H100i
Raid Card: N/A
Sound Card: Onboard
Any Additional hardware plugged into your system: N/A
OC: Yes
Operating System: Windows 7 Pro, Mac OSX 10.9.1
When ever I boot I get the A2 boot hang, I turn the system off, unplug the 3TB WD drive, and it boots like a charm. I have hotplugging enabled on the second SATA port, so after I boot, I plug the drive back in. It works, but having to unplug something every time I turn on my PC is far from preferable. Thanks in advance!
I've tried: Changing SATA ports, updating the BIOS, clearing CMOS.

Oki, thanks i will be back to you when i have news about it

Z77A-G45 boot loop

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