N260GTX-OC, computer will not POST

Hi everybody,
I recently got an MSI GTX 260, and after installing it my computer would not POST. I had an 8600 GT, switched the cards out an my computer turns on for about 5 seconds, then turns off and reboots, continuously. I had a Cooler Master 500W, but saw it was only pushing 32A over the +12v rails. So I went out and bought a BFG GS-650W which puts out 40A over +12v, so thats over the required 36A. Everything is disconnected expect RAM, CPU, Gfx card, and one SATA DVD drive. I don't have another machine to test the card in, so is there anyway I can tell if the PSU is still underpowered or if it's the card?
Full specs:
Gigabyte P35-DS3R
Core 2 Duo E6750 (was OC'd to 3.0, but I put it back to the stock 2.66)
2 GB DDR2-800
MSI N260GTX-OC 896MB (i hope?)
X-Fi Platinum
BFG GS-650W PSU

I live in Germany so I'm not familiar with MIR system at newegg and therefor let you correct me
As far as I know the output of Corsair psus is rated at 50°C while PC P&C rates continous output at 40°C which is a bit more ideal. Also Corsair doesn't really make psus so the TX650 is to my knowledge made by Seasonic (TX750 is Channel Well) who have also an excellent reputation for psus.
At least both are great units and one can't do anything wrong deciding between the two. It's more or less a question of personal preferences. I don't think one of them is really a better buy because of technical reasons.
I have to correct you a bit about the popularity and availability of PC P&C in Europe. Well, I can only speak for Germany but over here those units are easiely available in most shops. There's no difference to the States. Price level is almost the same with Corsair TX series and got quite low by now. Without any rebates TX650 and Silencer 610 are about $108/€80.

Similar Messages

New computer will not post

Just built new puter with a KM2M mobo but can not get it to post. Initial screen displays memory and HD correctly but has ”checksum error - hit F1" message. Hitting F1 has no effect plus the delete key will not open the BIOS.
Tried resetting CMOS, different memory stick and different memory slot, reseated all cables, tried at 100 FSB, and even tried different keyboard. Don’t know CPU Temp, cuz can’t get into BIOS, but cooler does not feel hot.
Puter has a KM2M mobo, XP2200+ CPU, 256MB Crucial memory, and 300W AMD approved PS with 3.3v/28a, 5v/30a, 12v/15a.
Any help greatly appreciated, Bill

Mayby it's bad RAM, try using a different one.Then start the PC up again. GO in to BIOS, set it the standard defaults and set up windows.
I've had similar problems due to bad RAM sticks
Just to be sure, check if you've placed the CPU fan in the correct way. See the cooling guide from this forum for that.
Greetings Fabrizzio

Will not post

i am building my first computer and am having a few problems.I have installed the following components which were all purchased new
motherboard 845pemax
celeron D processor 320
300 watt power supply
256mb kingston ram
Nvidia Rivia TNT2 m64 agp 16mb video card
my problem is that my computer will not post
the monitor light goes green but says that it is in power saving mode
What should I do
It appears that keyboard does not work either.
Any help is appreciated
sarahjac

http://www.msi.com.tw/program/search/ser/SerConProRes.php?keyword=845pe&kind=1
I don't see any 845PE Max boards that show support for the Celeron D processors.

P67A-GD55 will not post

I am absolutely stuck and about ready to RMA this board as I believe the one I got is DOA, though I'm not 100% so I'm posting here to make sure that it is in fact the motherboard that is faulty and not some other piece. My computer will not post, no beeps, no video; it simply powers on, sort of.
Allow me to describe the problem. When I push the power button, there is a delay of about 5-10 seconds before the computer finally powers on. Once it does power on, it spins up, for maybe 3 seconds, then shuts off, then about a second later, it powers back on again. It will reset itself 5-6 times before finally staying on, then it sits there. No beeps, no post, no video.
Here's what I've done to troubleshoot the issue.
I have removed any attached hardware (video cards, hdds, etc) one at a time to see if one of them was causing the problem, but to no avail. I removed one of the sticks of RAM, that didn't work, then switched the two, also didn't work. I thought it was perhaps the power switch, so I swapped that out, that also didn't work. I tried a different PSU, also a failure. I got down to just the cpu, the motherboard, the psu, and a power switch, and it did the same thing. I double checked the CPU to make sure it was in properly (just in case), and it was in correctly. I'm not sure what else I can do to trouble shoot this board. I cleared the CMOS every time I changed/removed a piece of hardware and even bought a new battery.
Here are my specs:
MSI P67A-GD55
Intel Core i7-2600K Sandy Bridge 3.4GHz - Model BX80623I72600K
Thermaltake Frio Heatsink - Model CLP0564
2x CORSAIR Vengeance 4GB 240-Pin DDR3 SDRAM DDR3 1600 Memory - Model CMZ4GX3M1A1600C9
CORSAIR CMPSU-850TX 850W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready Active PFC Power Supply
NZXT Phantom PHAN-001RD Red ATX Full Tower

Quote
If there are bent pins, what is the best approach to straightening them?
A strong light, a good magnifier, a pair of tweezers, & a steady hand.
It is also recommended for initial startup, that only one RAM stick is used. Placed in the primary dimm slot (blue closest to the CPU). Then load OS, drivers, etc., then add the other stick(s) later.

Kt333 ultra2 will not post?

i had this motherboard sitting for 4 months and when i set all my stuff up for my son the computer will not post the d-bracket hangs at hard drive initilization please help?

I agree, but perhaps we - not Rogue_Wulff - failed to demand info?
If you had the NIC in a slot very close to the graphics card, drivers might have been in conflict with eachother. But there are as stated other reasons.
Nice you got it going!

K8T Master2-Far Will not POST unless CMOS is freshly cleared!

Hey all, thanks for helping out.
I came back to my computer one day to find it in a coma. The system was on, but the screen was getting no signal and would not come on by moving the mouse/keyboard like usual. I thought that maybe it had turned off the monitor for power save and then frooze some how. After restarting the computer I found that it was still doing the same thing. I shut down the system and unpluged. After waiting about 5 min i plugged back in and flipped the switch on the powersupply. This started the computer right up (even though i had not pushed th power button) and left it in the same condition as before. It simply would not post. After closer inspection I found that it was not posting because it wasn't getting far enough in the process before it was being restarted. I checked the restart button and even went as far as removing it from the motherboard. This did not help. I knew it was restarting because i could see it checking the optical drives then waiting for about 4 seconds, then a weird noise from the speakers (like a soft cruching so to speak) would happen, then it would do this all over again, non stop. That noise was familliar though, it was the normal noise that I hear when I push the restart button (I'm guessing a release of electricity etc..) so I knew what was going on.
After switching the memory out and in all orders, I stripped the system down to the bare min. This however did not change anything. I put the system back together and flashed the cmos. This made the system restart once, then "BEEP" it posted. It said CMOS Checksome Error - Defaults Loaded. I first pushed DEL to get into the bios. I changed everything back to how its suppost to be (time, apature, etc...) then saved and exited. This made the system go back into its restarting state. I then flashed the cmos again and pushed F1 to continue. The system booted up just fine. In safemode of course. Then i restarted. It then went back into its restarting state. I flashed the bios again. And after pushing F1 to continue selected it to go into windows normally. Everytime it does this it gets different results. One time it got past the windows xp loading screen and sat at the black screen before you get your curser and welcome screen (sigh... restart... flash..). It also once got in just fine, and after about 5 min got a blue screen about "bad pool caller". It most the time however gets a random blue screen right after you see the welcome screen. These blue screens consist of "bad pool caller", "IRQ Equal or Lesser Value", or No notes, just generic blue screen.
If i change anything in my bios it will not post. If i dont flash the cmos, it will not post. If i dont change anything in bios and continue, then restart, it will not post. The only way for it to post and for me to see anything on the screen is to flash the cmos. I thought it might be the power supply, but the only extra i have does not have the extra plug to power the 2nd cpu. After thinking about it though. I dont know if it could be a power supply issue, if it was then would it even load up into safe mode? Or why would it not load up into safe mode again after restarting. I have tried an extra stick of memory that i know works in a separate computer, but nothing changed. I have tried a different videocard... nothing changed. I have removed everthing accept the basics (motherboard, cpu's,videocard,memory,psu) and nothing changed.
I have worked on this for about 1 week now and can not figure it out. I have my useless MCSE/CSE/A+ certifications (I say useless because I dont have a job that uses them) but this one is beyond me. If anyone could help I would appreciate it.
Thanks,
Brandon
P.S. I dont know if this is related, but I did have to change from useing the DVI connection to RGB plug to even see anything once I heard it post. I was useing DVI before, and once i figured out that it would post after flashing cmos, I had to change to RGB to get any visual. The DVI will not work now at all. I have even tried changing cords. The DVI wont work in safemode either. Thanks

I reckon these mobos have a fault that really needs to be sorted. You say that your PC was working fine using PC 3200 memory with 240's. I have a similliar problem, I am using 246's with Kingston' PC3200 KVR333X72RC25/512D 2.5 ECC REG. The PC worked fine for about two weeks and then one day went on a blink, every time I power it up all I get is beeps. I was forced to order new BIOS, which didn't work everything else has been tested and works fine.
So I ordered micron memory 2X512 PC 2100 266 ECC REG which I was told by the supplier that it was compartible, that didn't work either. I then went on to check the battery, to my surprise the battery was low so I thought I had nailed it, went out bought a new battery but the problem still exits. I must say though after installing the micron memory it did boot up but when I went into BIOS to change settings to boot fro CDROM the damn thing would not restart I had to switch it off using the power button to restart it and when it restarted all i got was beeps. After that to get it to bootup I have to reset CMOS using the jumper and when it boots up it gives a checksum error message. I have a choice of two at this stage
(1) To Press F1
(2) To Press delete o go into BIOS setup
The F1 option takes me as far as the windows log on screen and that's it cuts off as if it is gonna boot itself backup but just hangs there.
The Delete option takes into BIOS which when exited the PC does nothing until powered down and powered up again, from here I have to reset CMOS to get it to bootup.
I have been told that the kingston memory is not compatible but my question is how did it work the first two weeks?
Good ol' Bas have helped out on this one quite often but here I am three months on still in a struggle. I thought of RMAing the board but it would cost me about 160 pounds and with that kind of money I could pick up another boad from kompllete.com and remain with some change for a couple of buds.
"To bass You said in the last post that the poblem could be the power supply changed it but that has not solved my problem"

Mac OS 10.5 / I deleted the " Private" folder ... and emptied the trash. So the folder and its contents no longer exists on my computer at all !!! I do have the OS dvd that i purchased years ago... But my computer will not start from it on its own. My

Mac OS 10.5 /
I deleted the " Private" folder ... and emptied the trash. So the folder and its contents no longer exists on my computer at all !!!
I do have the OS 10.5 dvd that i purchased years ago...
But my computer will not start from it on its own.
My question is what is the open source or terminal language code used to tell my mac to look in the DVD rom drive for startup info? I know that im not the only person in this world who has deleted the "PRIVATE" folder and emptied the trash so it no longer exists on their machine...
That said theres gotta be a common fix for a Power PC G4 that has the OS X dvd in the rom drive but wont look to it to reinstall the vital contents of the PRIVATE folder.
Once again there is not a copy of this file or its contents in the recycle bin...
Also rebooting the machine , pressing and holding the letter C does not prompt the machine to look to the dvd rom drive.
I was reinstalling pro tools and figured I would make some room by cleaning my computers HD...
Lol It was a bad choice to delete this file ...
Thanks guys

Okay sorry it took forever to respond... But for a while there I gave up on this computer!!!!
Money's been tight lately , so taking it in to a professional was not yet an option... though I did consider it eventhough.
Anyway long story short im glad I didnt spend any money because I already had all the tools necessary to fix this issue but was going about it in the wrong way. Okay so here is my scenario and the breakdown... Though this may not fix the issue for everyone :( which *****... But I know we all will have different circumstances.
Anyway here we go...
Okay so first things first.... Years ago I purchased the OS 10.5.1 disk ... So that has always been in my possession!!!!
I realize that some may not have a disk to reflash your OS to your hard drive... but if you do your in luck.
2ndly ... I had an external harddrive with all of my itunes downloaded music so it was more than okay with me to delete my primary HD because all the important stuff could either be copied over or repathed to be located.
-------If you dont want to read through the whole story the fix is summed up in the bottom section-------
Okay so now the SOLUTION!!!!
By trial and error , and pure boredom I opened up my computer to clean the inside...
AND
"Disconnected the primary HD"
and just because ....... REBOOTED my computer. Just to see what it would do.
Upon restart and though it looked like it would repeat its usual cycle...
About 1 minute in to that process my computer froze for about 2 seconds and flashed to the OS installation screen.
Mind you I havent seen this screen yet... Probably hasnt been since I installed the OS years ago.
After a bit of trial and error...
I decided to tell my computer to startup from the OS 10.5 disk located in my dvd rom drive and restarted once again...
this setting is under
Utilities / startup disk
After a little more trial and error ... I realized that I could reconnect the primary HD , restart the machine and return to the OS installation menu.
So upon this discovery
I went to the Disk Utility located under Utilities
Highlighted my primary HD located in the left hand column
Once highlighted ...
In the heading section on the right I selected the option
Erase
in which I erased My current OS on my primary HD ...
I used the first option in the list under security... Because it seemed like the least invasive and would take the least amount of time to see if this process would actually work.
I FORGOT to add something...
Another reason why I deleted my primary HD!!!!!
I forgot to say that it WOULD NOT!!!!! Show up in the STARTUP list as an option...Even After multiple reboots....
But like clockwork... Once I deleted its name IT SHOWED UP as an option!!!!
So back to the next step...
I returned to the STARTUP option under utilities ... And was then able to see MY primary HD now as a startup option...
But ofcourse it had no name because it we previously erased it.
So when Clicking my newly erased HD ... I was almost immediately prompted to REINSTALL the OS ...
Which said it would take about 57 minutes ... But I believe was alot less...
My issue was resolved ... My computer then stated the install was SUCCESSFUL!!!!!!! :))))))))))) lol ;)
It was like I was setting up for the first time ;) asking for my registration info...
The dilemma of deleting the private folder and emptying the trash is finally over resolved. Done ... and no extra money spent!!!!!!!!!
Its really crazy that the information for such a simple thing is not readily available. Especially being such a simple fix.
I know im not the only person who's had this issue , because i've seen numerous posts with similar wording.
I also know I wont be the last person to have this issue... So I hope this synopsis makes sense.
-------One more time the fix------
*Insert your OS dvd into your dvd rom drive.
*Unplug your primary HD or corrupted startup disk
*Reboot your machine...
Upon restart your primary HD will not be recognized...
* you will then be prompted to select your language.
Once selected
*Click Utilities/startup... Highlight the the selection that refers to the OS dvd located in the dvd rom drive.
* Click restart...
!!!!!!!!!!Be sure to reconnect your Primary HD Before your computer restarts and you hear the chime!!!!!!!!
If you do not replug your HD before the chime it will not be recognized.
In that case restart again.
Upon restart once again
*Choose your language...
*Click Utilities / disk utility
In the left column select and
*Highlight your HD ...
Then towards the top portion / center of the page
*Click the heading Erase
Then on the page toward the bottom
*Click security options
This will then provide erase options.
I USED THE FIRST OPTION
"Dont erase data"...
*click OK
* click erase...
Once erased which should take a few seconds
*Cancel the disk utility...
* Click Utilities / startup
And your newly erased HD should now appear in the list.
* Select your drive from the list by highlighting
It should no longer have a name.
*Once selected, you will then be prompted to restart and install the OS to your newly erased HD...
Thats it!!!!
Once everything reinstalls re-add your personal info or registration info and you are up and running.
Goodluck ;)

Computer will not install 10.5

my computer will not install iTunes 10.5. I have 10.4 currently and it syas that a required file is missing during the 10.5 install and shuts down. I purchased an iTouch for my daughter and it won't sync with 10.4! Ugh!!

I Found a Cure!!!
I would like to thank: Lukefrom somerset - he posted this comment and i did what he said and it WORKED!!!
Luke Posted - If your having the same issue as I did, click your start menu in the search bar type in Apple Software Update, click on it the program with open and it should start searching for updates. Do the updates and then it will try and search again for more updates and it will find ITunes 10.5 click the box next to it and download.

Computer will not run iDVD at all

My computer will not run iDVD at all. I try to start the application, and it bounces twice in the applications bar and disappears. I have tried to re-install it using the iLife '08 Install CD, but although the CD allows me to install the old themes, it does not allow me to install the iDVD application itself (yes, there is enough space). I have tried opening an iDVD file and exporting an iMovie to the iDVD application, but in neither of these cases will iDVD start up.
Recently my iMovie HD application broke and so I used the iLife '06 install CD to get it working again. That custom install on that CD did not allow me to uncheck iDVD; hence, it is possible that iDVD '06 was installed over '08. Maybe this has messed up iLife '08 so it can't install the newest version over it? I am not sure, and definitely need some guidance here.

I've had the exact same problem on my Powerbook G4. I did a clean install of Leopard, installed iLife '08 and after that iMovie HD '06. I couldn't uncheck iDVD either when installing iMovie '06. I solved it "the hard way" : uninstall iDVD with e.g. Cleanapp (http://www.synium.de/products/cleanapp/index.html), and then install iDVD again (just check iDVD in the list). And it works ...
Apple should work on this: hundreds of people have the same problem (just look at all the posts in the forum and on google). I tried the Apple solution (http://docs.info.apple.com/article.html?artnum=306290-nl), but it didn't work at all.
Hope this gets you up and running again.

My computer will not wake when I press a key or use the mouse....

I have to say that I have a G4 but my question is not getting addressed in that forum and there ae many more users that utilize this one, so sorry for misleading. BUT, for some reason my computer will not wake when a key is pressed or the mouse activated. Any sugestions? Also, does anyone know of a program (shareware or free) that will clean my files and/or hard drive ( i.e. Macjanitor, Cocktail)? Thank you for your help.

As a first step you could try trashing
/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
and re-start and re-select your preferred System Preferences - Energy Saver settings.
There are more suggestions here
http://discussions.apple.com/search.jspa?threadID=&q=won%27t+wake&objID=f596&dat eRange=last90days&userID=&numResults=15&rankBy=10001
Post again if it doesn't help.

My OS is windows 7 64 bit. My computer will not communicate with my HP Photosmart A646

My OS is windows 7 64bit. My computer will not communicate with my HP Photosmart A 646 portable printer.
It says it is ready but when I go to print a picture (4x6 or 5x7) that printer is not available. I downloaded an updated
driver but no change.
TY or any help
Tfoot

Running the diagnostics at http://www.hp.com/go/tools may help resolve the issue.
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

Blackberry 6.0 problems- computer will not restart

I tried to install the blackberry desktop software version 6 on my computer. The computer will not work now, CPU usage is at 100 % and System Restore did not help fix the issues either. Computer is running Win XP SP3, The installation has also affected the Wirelees card on the computer, and will not let the computer run unless the Wireless card id disable and shut off. There is also a file that keeps trying to install call Roxie Media Manager, which the file is not where to be found and is not downloadable on you support site. I am in the process of reloading my entire computer to fix this problem. THIS is the second time that I have had to reload because of doing an update from Blackberry. If there is a solution for this it is not listed in any forums on this site. If your software has not been tested with all operating systems, this needs to be stated in the download information before someone downloads the new updates. I love my phone, but the Desktop software is a major drawback to anyone that needs their computer on a daily basis. Please come up with a fix or notice that will avoid this problem.

I've never had any problems with DM6 on WinXP, SP3.
I've mentioned on here several times that I don't recommend using the Roxio software, it's just to buggy I think.
For a Clean uninstall of Desktop Manager
http://www.blackberry.com/btsc/KB02206
good luck.
1. If any post helps you please click the below the post(s) that helped you.
2. Please resolve your thread by marking the post "Solution?" which solved it for you!
3. Install free BlackBerry Protect today for backups of contacts and data.
4. Guide to Unlocking your BlackBerry & Unlock Codes
Join our BBM Channels (Beta)
BlackBerry Support Forums Channel
PIN: C0001B7B4 Display/Scan Bar Code
Knowledge Base Updates
PIN: C0005A9AA Display/Scan Bar Code

Computer will not send printing to printer.

Computer is HP Pavilion dv6 Notebook PC which is wireless & has Windows 7 OS 64-bit. Printer is HP Officejet 6500 Wireless. Wireless router is Linksys WRT120N. Printer says No computer connection, refer to device documentation to troubleshoot. Printer will copy but computer will not send printing to the printer. I am connected to the internet. Normally when I come home I just click on the printer icon & make it the default printer & I'm all set. However, this year when I got home (winter in another state), it does not work!! The only thing that changed was we had trouble with our cable in the other state, but I thought it was the router, so I made another connection which didn't work either. So the cable technician fixed it for me, taking off the additional networking icons I made in error. So I feel that the problem is in the networking but don't know how to fix it!!! Thanks for your help!!

Hi senior2,
It is hard to say what may have happened that cause the laptop to love connectivity with the printer or the printer lose connectivity with the network.
A links for you:
http://h10032.www1.hp.com/ctg/Manual/c01669504.pdf : Check out page 217 "Solve network problems" and "solve wireless problems". Continue reading through 223.
Some things to try that ma be repeatsof the user guide....honestly not sure if any will help but it will help with next steps I think.
1) Does the printer obtain an IP address. Can you access it through the embedded web server? If the answer is yes, the problem is likely on the PC. If connected Wireless it should have the wireless LED On.
2) If the printer does not obtain an IP address, double check the settings match your network.
3) Double check your Laptop LAN Is properly configured for your.
Hope this helps. If not, post back and let us know what you tried.
Kaz
Kazman
I am an HP Employee
Say Thanks by clicking the Kudos Star in the post that helped you.
Please mark the post that solves your problem as Accepted Solution

My computer will not start up. the message diplaying says 'startup test failed'. any tips??

my computer will not start up. the message diplaying says 'startup test failed'. any tips??

Hi,
Do you know which test your notebook failed? If you don't know, try the following.
Shutdown the notebook. Tap away at f10 as you start the notebook to enter the bios menu. Under the Advanced or Diagnostic tab you should find the facility to run tests on both the Hard Drive and Memory. Post back with the details of any error messages.
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

My computer will not start. Just the wheel spinning

My computer will not start. I get the apple with a spinning wheel.
What is happening?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 6
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 7
Repeat Step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
Step 8
This step applies only to older Macs (not current models) that have a logic-board ("PRAM") battery. Both desktop and portable Macs used to have such a battery. The logic-board battery is separate from the main battery of a portable. A dead logic-board battery can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested. If you can't get to an Apple Store, go to another authorized service provider.

N260GTX-OC, computer will not POST

Similar Messages

Maybe you are looking for