Help with coil whine on a z77a-g45

my motherboard has coil whine on the sfc choke that is right beside the 24 pin power.i know its that becuase you can use a straw and push on it and it will stop.is there any way to get rid of it like changing stuff in the bios or should i just learn to live with it.its a high pitch whine and sometimes like a rattling sound.my other system parts are a g1620 and 8 gb ram and a video card.
Board: MSI Z77A-g45
Bios: latest 2.12 i believe
VGA: palit gtx 470
PSU: ocz modstream pro 500w
Intel intel celron g1620
MEM: 8gb ddr3 1600mhz ram
HDD: transend 128gb ssd
COOLER: stock cooler
OC: none
OS: windows 8.1 pro
also have a brand new tx650 that i got as a rma replacement the first of last year that i could try..also i took out the gpu to make sure it wasnt it nut it still there.

Quote from: Nichrome on 20-January-15, 06:39:06
Hi,
Please list full system spec: >>Posting Guide<<
There is no help for coil whine unless other part of the system is causing it like low quality PSU or something with GPU
i can disable c1e and cstates in biose and the whine is gone.i had a firend tell me that doing that turns speedstep off but it still on.is it bad to run with the off and why did it not turn speedstep off

Similar Messages

MSI GTX 980 GAMING Coil whine!

Just got my GTX 980 Gaming yesterday...... AND it has terrible coil whine!
No point in having silent fans, if the coils whines like pigs!
Just writing this to warn others, mine is going back to the dealer tomorrow.
Tried all MSI profiles (Silent, Gaming and OC) and the noise frequency varies, but it's always there under load in most games. Easiest way to test might be running folding@home on the GPU, which for me causes very solid whine - all the time.
And yes I'm sure it's the GPU, not the PSU (which is a solid Seasonic in case anyone would like to know).

I returned a MSI 970 due to coil whine so loud I could hear it down stairs in the kitchen! I could just hear it outside the room at idle, and when high fps etc it could heard down one set of stairs!
I've had numerous issues with 970's from all companies.
I had two PNY's originally, one the fan never came on unless I pushed it and the other made weird noises from the fan and a low ticking noise from somewhere.
Then went on to two Zotac Omegas, which ran hot even with the fugly 3 slot cooler, and didn't overclock worth beans (the PNY's beat it slightly!) The OC+ and Firestorm are useless and buggy.
Next was one MSI 970 as they only had one in stock (beautiful cards, to bad no backplate) :( It was the one with coil whine bad.
Now trying a MSI 980 that seems good so far (apart from having no backplate :(). A tiny bit of coil whine at very high fps instances, nothing to gripe about.
Even tried two PSU's (an Antec Signature 850W and this EVGA 850W Supernova G2, the whine and issues happened with both, didn't make a difference.)
I expected driver issues to boot, but not this many hardware issues across so many brands. Staying with reference boards and using high quality components seems to work better for these companies than letting them do as they please it seems...
I now have a some banding/flashing issues with this 980 in one game so far, and am hoping its the drivers, but will see as I install more games again...

Help with OCing my MSI Z77a-G45 gaming with i7 2600k

Hi there its been awhile since ive done OC since my old intel e8400 and everything looks different now..i just recently bought a brand new Msi Z77a-G45 gaming MB and i7 2600k for good deal and would like to push my limits on this setup
Currently setup:
intel i7-2600k
8gb ddr3-1600 gskill ripjaw X Model F3-12800CL9D-8GBXL
MSI Z77a-G45 gaming motherboard
Antec Hcg-750 PSU
Evga gtx670 single card
my old rig Corsair H50 for now waiting on my custom built water cooling
i know i tried using the OC genie to test out their OC setting which gave me 4.2ghz with 1.336vcore and friend told me thats kind of high for a 4.2ghz?
any help will be good step by step. my goal for now is to reach like 4.4-4.5ghz until i get a better cooling system

Alrighty, appreciate the info; gonna back down to 4.4Ghz as I can maintain stability with 1.275 vcore in bios = 1.26 in windows = 1.24 under load resulting in hottest core never exceeding 70...was really hoping for 4.7-5.0Ghz overclock when most everyone who reviewed this chip in the early days was claiming such great overclocks with such low voltage. But I'll chalk that up to either misinformation or non stability checked overclocks, I guess I'm old school; cause if it can't hold up to a minimum 24hr pass of Prime 95 small fft's it isn't stable in my book. Might consider delidding it in a year or so once the new wears off, I had my i7 920 for about that long before I lapped it into a mirror shine lol. So based on my new information 3770k's on average overclock between 4.4-4.6Ghz and can require up to 1.4 vcore and higher past 4.6Ghz which is where you start to really become thermally limited on liquid as the Ivy Bridge's 22nm technology puts the cores to closely together in combination with intel's cheap ass thermal compound solution. Maximum recommended voltage for 24/7 shouldn't exceed 1.4 vcore without some kick ass cooling or a combination of delidded processor and kick ass cooling cause ideally you want your cores mid 70's and below...that about sum it all up?

Need some help with MSI Z77A-G45 Gaming Motherboard

Hey guys I want to buy the z77a-g45 gaming Motherboard.
but i dont now if i could use my RAM that i own now. could you help me out.
My ram is: Corsair Vengeance CMZ16GX3M4A1600C9 4x4GB

As said before:
Quote from: flobelix on 21-October-13, 04:11:33
None the less that Corsair kit should work although a 4x4GB kit is not optimal for a dual channel system (as 2x4 or 2x8GB would be ideal). That matched 1.5V kit should none the less work.

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.

Need help with clickbios ii terminolgy and values. Z77A-GD65 / 3770k

Hello All
I recently purchased a Z77A-GD65 board and after searching I've found the differences in terminology between this and my previous Asus board but still have a couple of settings I cant find any info on.
System Specs:
motherboard: msi z77a-gd65
cpu: intel 3770k
ram: corsair vengeance 2133mhz 1.5v
psu: corsair 850w
First things first is I believe I am running in turbo oc mode. I've selected the oc genie tab on the center right of the bios screen and proceeded to change settings there. With cpu voltage on auto and vdroop set to 50% at 4.6ghz. (I'll try and get screenshots of bios settings soon)
The following are the terms I need help with:
In the my oc genie section;
1. Long duration power limit
2. Long duration maintained
3. Short duration power limit
In the main overclocking section;
4. Digital Compensation level (not in owners manual, options auto/high)
5. Cpu core ocp expander (enabled for overclock 4.5ghz+?)
In the CPU Features section;
6. long duration power limit w (does "w" stand for watts?)
7. long duration maintained s (does "s" stand for seconds?)
8. short duration power limit
9. primary plane current limit a (does "a" stand for amps?)
10. secondary plane current limit
11. primary plane turbo power limit
12. secondary plane turbo power
I know those are a lot of settings, but would appreciate any simple definitions as to what they do and recommended values for mild overclocking (4.5-4.80)
Also on my previous board (Asus P8P67 Pro) my 3770k was stable in prime95 for 18 hrs at 4.5ghz fixed 1.155v with only ram timings put in manually and LLC set to extreme.(or whatever max is called in asus bios) Voltage was fixed and everything else was defailts.

Well I'm back. Been digging around for a few days and found some answers to my questions.
First things first s that for some reason I could not adjust voltage values with the + or - symbols. Clearing cmos did not help this. I had to reflash the bios to get this functionality back as well as clearing cmos before and after the flash.
So I figured out the values in the oc genie section are the same as the normal section but only used when your using the oc genie. (numbers 1-3)
Digital compensation level and ocp expander should be set to high and enabled respectively when going for higher overclocks. (4 and 5)
Now for the rest of my questions ( 6 through 12) I have found suggested settings and some info after hours and hours of searching but still have a couple of questions about them.
Long/short duration power limit, and primary/secondary plane turbo limit. I see suggestion settings of 250 or 255. I take it this is simply max supplied watts to the chip? If so why the 250/255 values? Is that the highest the board will give? Is plane turbo limit related to the enhanced turbo stated and how much wattage can be drawn there while the other limit is for any non turbo frequencies?
Long duration maintained, I've seen 60 suggested a lot. Why is this?
There's not an over abundance of info on these boards as compared to asus so it seems info is a little less documented and video tutorials explaining things are next to none.
Any help would be appreciated. Thanks

MSI Z77A-G45 Motherboard Overclocking/BIOS help!

Hello everybody
I've been having quite a bit of trouble with my MB/BIOS being unable to push the OC beyond 38/3.8GHZ and the RAM won't go further than 1600MHZ.. Now i was able to do this before (Had a stable 4.4GHZ with 2133MHZ RAM speed.. i'm not quite sure what's stopped me from being able to OC more than these stated values, however in ClickBIOS i can OC higher than i can in the BIOS menu on startup itself but the settings don't apply correctly
I have a I5-3570k CPU, MSI Z77A-G45 MB, Crucial Ballistix Elite 2x4GB 1600MHZ, MSI 560ti GTX
Screenshots:
http:// i148.photobucket.com/albums/s11/TerroR-LazarouS/MSI_SnapShot_00 .png
http:// i148.photobucket.com/albums/s11/TerroR-LazarouS/MSI_SnapShot_01 .png
http:// i148.photobucket.com/albums/s11/TerroR-LazarouS/MSI_SnapShot .png

One thread is enough: https://forum-en.msi.com/index.php?topic=180369.msg1297816#msg1297816
-- TOPIC LOCKED --

Boot problems with Z77A-G45

Quote from: CMaster on 22-June-12, 15:31:08
Processor: Intel i5-3570K retail (new)
Mainboard: MSI Z77A-G45 (new)
Memory: 2 x Corsair 4GB XMS3 DDR3-PC1600 CMXBG3N2A1600C9 (new)
Graphics card: MSI N560GTX-Ti Twin Frozr II (new, currently disconnected)
SSD: Crucial M4 512GB (new, currently disconnected)
Power supply: Antect earthwatts 500W (used, fully functional)
HDD1: WD Velociraptor 300GB (used, rather full)
HDD2: Samsung Spinpoint F3 2tb (used, currently disconnected)
Optical drive: DH-201AS DVD-+RW (used)
Once everything is all connected up, installed in the case, etc etc, upon power up, the fans all spin up, HDDs initialize etc. Then after 10 seconds or so the system powers down again, with the screen (whether on the external or internal graphics) never having been active. There are no beeps from the PC speaker whatsoever, nor do there seem to be any indicator lights as I've had on previous MSI motherboards. The manual is completely absent of any troubleshooting section. So my main question is, is there any way to tell what stage the startup is failing on? Other threads on this forum (here and here) suggest that the problem is due to lack of processor support. As the motherboard was sold as Ivy Bridge ready, I'd like soe way of confirming this as most likely cause before paying for some fix.
Hey I am actaully sharing the similar problem of yours....
I am using MSI H77MA-G43 (BIOS v1.5), and a set of DDR3-1600 4GB RAM x 2.
When i am using both 2 pcs of RAM, i am facing the same problem:
"after 10 seconds or so the system powers down again, with the screen (whether on the external or internal graphics) never having been active. There are no beeps from the PC speaker whatsoever, nor do there seem to be any indicator lights as I've had on previous MSI motherboards. "
When I use 1 pc of DDR3-1600 4GB RAM, it works again.
I just wonder if there is some RAM compatibility problem with MSI motherboard...I have tried below 2 sets of RAM:
AMD DDR3-1600 4GB x 2 (1.5V) (AE38G1609U2K-U)
Kingston HYPER-X DDR3-1600 4GB x 2 (1.65V) (KHX1600C9D3K2/8GX)
Cheers!

Please don't hijack other's topics. >>Please read and comply with the Forum Rules.<<
Your components are not the same, starting with the RAM. >>Posting Guide<<
Please supply your full system spec.
Your RAM is 1,65V overvolted DDR3-1600.
Only add one module as per the instructions. Then do a full CMOS clear with power cord removed. >>Clear CMOS Guide<<
Afterwards go into the BIOS and set that memory to 1333, (ensure that XMP is disabled for now). Set the DRAM voltage to 1,5V. Retest and advise.

Z77A-G45 and Sapphire HD 7850 OC 2go = problem with PCI-E 3

Hi !
I'm sorry for my English but I'm French and I hope that I will be understood.
Here is my problem :
I have bought a mobo Z77A-G45 and a graphic card Sapphire Radeon HD 7850 OC Version 2go which is compatible PCI-E 3 x16.
But when I go in the catalyst center to view the information on the hardware it says PCI-E 2 16x.
In the bios it's on AUTO.
This is not normal ??
Thanks you very much for your help

oh I'm sorry !
Board: MSI Z77A-G45
Bios: Version 2.6
VGA: Sapphire Radeon HD 7850 OC 2go
PSU: OCZ ModXStream Pro 600W
Intel Core i3-3220 Ivy Bridge 3.3GHz LGA 1155 55W
MEM: Crucial Ballistix 2x4gb DDR3 PC3-12800 CAS8
HDD: Samsung Serie 830 - 64go SSD
OS: Windows 7 64bit Ultimate
So I have an Ivy Bridge CPU... In the BIOS I just have the choice between AUTO and DISABLED. It's on AUTO.
Thank you for your help !!

Coil Whine MSI Z77A-G43

I just bought a workstation - specs in sig and have a decent amount of coil whine from what I understand. I'm confident I've isolated it to the mother board after unplugging the graphics card, fans etc -opening up the case and listening. I originally thought it was dirty power, after buying a power conditioner, that theory is out.
Anyone else experienced this. And or found a solution? I don't really game but work on multi-media. It's very annoying to hear as I'm trying to record music for example.
Thx -CT

Very weird. You are the first reporting this. Maybe ask MSI if that is normal or if you should rma the board: >>How to contact MSI.<<

N580GTX Twin Frozr II/OC Coil Whine with OCZ Z1000M

Hello,
i am using the N580GTX Twin Frozr II/OC , and it has serious coil whine. my psu is the OCZ Z1000M :
http://www.ocztechnology.com/ocz-z-series-1000w-power-supply.html
this card needs 42a on the 12v rail, and the psu has 83a on the 12v rail, so it should be more than enough for this card, thats why im quite sure that the reason for the coil whine is the graphics card. could there be any other correlation between the psu and the graphics card which are causing this coil whine ? could the psu be the source even if its more than strong enough on the 12v rail ? its very very hard to locate the exact location of the whine.
best regards
br1zz

That whine has been occurring on many NVIDIA graphics cards regardless of brand and model, not just MSI. Gigabyte, ASUS, EVGA, Sparkle or whatever, they all have had similar complaints and even warranty replacement you can't assured of getting a new card that won't make the same noise. Apparently there is just enough of a gap between PCB beand whatever component making the noise to allow the high frequency vibration to occur.
Possible fix would be to determine exactly which part the noise comes from and apply a small amount of hot glue, silicone sealant/caulk or maybe Elmer's White Glue where the part meets the PCB and see if that eliminates the noise. Out of all the complaints, and there have been many not a single one of them have replied back saying whether this method cured it or not.
I've even seen a comment from DaLoona on the f@h forum about his making such a noise.
There have also been plenty of complaints about similar noise on some ATI cards. also.

(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

Need help troubleshooting resets - Z77A-G45 Thunderbolt

Mobo: MSI Z77A-G45 Thunderbolt
BIOS: V10.4 / 20130305
CPU: Intel Core i5-3570K Quad-Core Processor 3.4 GHz 4 Core LGA 1155 - BX80637I53570K
Memory: 2x CORSAIR Vengeance 8GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) CMZ8GX3M1A1600C10
Video: HIS HD6770 Radeon
PSU: OCZ OCZ600MXSP
Primary Drive: Corsair Force Series GT 90GB (6Gb/s) SSD (CSSD-F90GBGT-BK)
OS: Windows 8
Running stock, board is otherwise very stable (memtest and prime95 passed).
About half the time, this board resets resuming from S3 sleep. I'm at a loss as to why. So far I've replaced the memory, switched PCIe slots, reflashed BIOS, set MB defaults, over/under volted CPU and Memory, and switched memory slots. In my current test, I've pulled the graphics card and am now running on the integrated GPU.
My questions are:
- if this holds, how do I determine if it's the card or the draw on the PSU (no other to test) from the card
- anything else I should try before I purchase 2x the components (as I have already done for the memory)?
Thanks!

Quote from: xmad on 13-June-13, 05:05:47
A4 is the latest full release.
This is the latest bios.
I just posted the change list from A4 ==> A53 here: >> BIOSes<<
Memtest passed 2 cycles, installed BIOS fine. Will let you know if this provides any relief. Thanks.

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.

New z77a G45 Motherboard - computer won't start.

Hi everyone,
I would appreciate some help, if possible.
I've purchased the following:-
1) i7 3770 processor;
2) z77a-g45 motherboard;
Installed them just fine (I think?) - first startup I get a 'CPU has changed, update settings' on the BIOS. However, after this message the system shut down. Now there's a faint smell of ozone in the air, and the system won't power on whatsoever. The motherboard has a handy set of LED's labelled CPU phase. When I hit the power button one lights up... then nothing.
I have done the following:-
1) Checked the PSU on another system - it works perfectly;
2) removed and reinstalled the CPU and cooling fan. Reapplied thermal paste.
3) Run the system using only PSU, CPU and RAM.
None of the above seem to do anything. I get the impression I have, through my carelessness, fried something. Any idea, given the vague description of the above, whether it would be the CPU or the mobo?
The power supply I am using is a CIT ATX 12v 700UB supply.
Any help would be greatly appreciated.

Remove the MB from the case and check if there are more than the required MB mounting standoffs. Ensure that there are only the ones that line up with the MB mounting screw holes on the case backplate and no others that would cause short circuit between case and MB. Also ensure that you have no pinched wires or wires with damaged insulation from the PSU that could be short circuiting.
It's always best to assemble the components out of the case on a sheet of bare cardboard to make sure it all fires up and runs OK before installing it in the case. Do this, retest and let us know how it goes.

Help with coil whine on a z77a-g45

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