Each time i press the power button i just have a blank white screen, and intermittent sounds/tone. No apple logo, or spinning circle.
Each time i press the power button i just have a blank white screen, and intermittent sounds/tone. No apple logo, or spinning circle.
I used to install the rEFIt to boot with win7. When I deleted win7, I didn't uninstall rEFIt. Nothing wrong with it. One day after I watched movie in full screen,I pressed esc to quit. Then I found the touchpad didn't work. I can't turn off air. I just pressed power button for a little while. It rebooted, then my nightmare just began...
I have tried everything, PRAM, command+R, literally everything. No change.
But when I plug a CD-ROM with USB, I can only here one BONG, just once, then white screen, Like waiting for something...
I took it to a service center in China, they told me the CPU had broken. SInce it's one month out of warranty, they wanted to charge me for like $250....
I really don't think that's CPU's problem. I checked the history, it seems like somebody else also had the problem before.
Can anyone give me some hints??? Thanks!!!!!! Or I have to take it back to America to check....
Impossible, there are zero, as in none, zip, nadda viruses for OS X. If you have viruses on it they are for MS Windows and will not affect OS X. I suspect the hard disk has crashed, if you have backup then it's not a big deal to have it changed, just take it into your local Apple Store or AASP for service. If you have not been backing it up you may be in for a painful lesson on why backup is critical.
Similar Messages
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i am having an MacBook Pro 13inch , having an Startup Problem , the time i press the power button after few seconds the apple symbol appears with a loading sign below it and wont go further ahead of it . My data is all in the hard drive .. . I even tried the Internet recovery but no use !!!! but still no respons and the recovery and macintosh hd is now lock! but earlier only the recovery is lock and after both of them is lock. i can reinstall,... and i didnt try to back up any data bec i dont know how? so please help me to resolve my prroblem.?
luoie wrote:
This thing happend,, it say Disk utility stopped repairing "Macintosh HD" disk utility can't repair this disk
Sorry, possibly you need a new hard drive or try reformating. First
you can try something like http://www.alsoft.com/diskwarrior/ it has been known to repair disk that DiskUtility could not. YMMV and they don't give it away.
If Disk Warrior can not repair then you need to Reformate the drive. Make sure you have a back-up in place no matter what.
http://www.apple.com/support/backup/
Disk Utility will tell you something about it's SMART status: -
Workin in Live View when I press the zoom button to focus I get a white screen with a 5x or a 10x wr
Working in Live View When I press the zoom button to focus I get a white screen with a 5x or a 10x written. I don't get the zoom picture. It just started doing this today and I've been using it for years. Any help? Thank you. OH I have a 450D (rebel xsi)
Solved!
Go to Solution.Which camera model?
Also, what are your exposure settings? Canon DSLRs do exposure simulation in live-view. So if the settings would result in an over-exposure you might be cropping in to view an all white area.
Tim Campbell
5D II, 5D III, 60Da -
HT4913 when i try to look at music at the itunes store i just get a blank white screen
i log in then press itunes store it processes then i just get a blank white screen. no music to look at or download
If you're seeing a blank iTunes Store, see this support article:
http://support.apple.com/kb/TS4123
If that does't help, try resetting Winsock. This has solved the problem for some people, at least.
1) Click on your start menu.
2) Go to accessories
3) Run the Command Prompt application. For those with Vista or Windows 7, right click on Comman Prompt and choose "run as administrator".
4) Once it opens, type in the following command...
netsh winsock reset
5) hit Enter and it should say something like Winsock reset successful.
6) Reboot your computer and try the iTunes Store again.
Regards. -
Computer and Ipod have both been restarted. Video has the same white screen problem. THIS IS NOT THE WHITE SCREEN OF DEATH - just when I press the music or video button.
- Try connecting to comutr and then try to restor.
- If still white screen, let the battery fully drain. After charging for an hour try the reset and restore again. -
I tried recover mode twice and it did nothing. The 15 day warranty is already up and I'm just wondering if I need to replace the battery at all? Also, before it stopped charging, it would turn off for no reason and the only way to turn it back on was to plug it into a charger and then it would turn right back on and have the same amount of battery that it had when it turned off... Is it the battery I need to replace??
HELP!!!!Not Charge
- See:
iPod touch: Hardware troubleshooting
iPhone and iPod touch: Charging the battery
- Try another cable. The cable for 5G iPod (lightning connector) seems to be more prone to failure than the older cable.
- If a 5G iPod
Iphone 5 lightning port charging problem - SOLUTION!
- Try another charging source
- Inspect the dock connector on the iPod for bent or missing contacts, foreign material, corroded contacts, broken, missing or cracked plastic.
- Make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar
Also:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try another cable
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar -
I recently bought mbp retina haswell 13. When i use it today suddenly my display went black....i dnt have any idea i try to press the power button then it gave beep sound. Then i press it for few seconds then it shutdown. I try to turn on again same result...plz anyone have solution for this ...help me
See Ogelthorpe's link:
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC. -
Probook 4535s-sleep pressing the power button doesn't work
Does this laptop can go to sleep via pressing the power button? I have these power settings but it doesn't work for me. The button just turn off the laptop...
freekarol,
Welcome to the HP Forum!
You can control what happens when you close the lid, press the power button, and other "power related" settings:
Control Panel < icon view > Power Options >>
Choose what the Power buttons do
and
Choose what closing the lid does
Happy Computing!
Click the Kudos Star!
It is a great “Thank You” for the HP Experts who are here to help!
Kind Regards,
Dragon-Fur -
Help - HP Pavilion a6030.uk desktop. Have to press the power button multiple times to start up?
Hi,
I have a HP desktop computer. The model is HP Pavilion a6030.uk, Opertating system: windows vista.
My computer has had no problem at all until yesterday for some reason i had to push the power button multiple times to start it until it finally turned on and did the normal start up. Such as i would press the power button as normal to start it, but all of a sudden, it would turn off after about 2 seconds, and so I would press the power button several times and each time it would not start up and turn off, so the power button would be pressed again until it would finally turn on and start up and run as normal and seems to work fine. And it was the same today, i pressed the power button mutiple times (e.g. 6 times) until it finally started as normal.
As im not very knowledgeable or very computer/technology savvy wise in this area, please will someone help me and give me some advice/help to fix/solve this.
Thankyou for taking time to read this and any help would be much appreciated to resolving this problem.
Thanks.
This question was solved.
View Solution.Vonbon90, welcome to the forum.
When I see these symptoms on an older computer, I believe that it may be a failed/ing power supply unit (PSU). Here is a guide that will help your troubleshoot it.
Also, you could test the memory. This can be done by removing all of the memory modules and replacing them one at a time and booting.
Please click the " Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved.
Signature:
HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1
HP Photosmart 7520 AIO
++++++++++++++++++
**Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**
Intelligence is God given; Wisdom is the sum of our mistakes!
I am not an HP employee. -
I have frequent instances of my Macbook Pro beeping 3 times and then I have to forcefully shut it down by pressing the power button. What is this all about? Please help. Thank you.
I saw this report being sent to Apple:
Interval Since Last Panic Report: 581719 sec
Panics Since Last Report: 10
Anonymous UUID: F4CF708D-D85C-4EC5-8047-4FC22C6B03AF
Fri Mar 7 13:00:14 2014
panic(cpu 0 caller 0xffffff80002d1208): Kernel trap at 0xffffff800020c590, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000000, CR3: 0x0000000007541000, CR4: 0x0000000000040660
RAX: 0xffffff8000000000, RBX: 0xffffff800d35a870, RCX: 0xffffff800cf55cd8, RDX: 0xffffff80008a8fcc
RSP: 0xffffff805e5f3d60, RBP: 0xffffff805e5f3da0, RSI: 0x000000001dcd6500, RDI: 0xffffff800d168778
R8: 0x0000000000000001, R9: 0xffffff805e5f3e88, R10: 0x0000000000000011, R11: 0x0000000000000000
R12: 0x0000000000000000, R13: 0xffffff800d168770, R14: 0xffffff800d168778, R15: 0x0000000000000000
RFL: 0x0000000000010082, RIP: 0xffffff800020c590, CS: 0x0000000000000008, SS: 0x0000000000000010
Error code: 0x0000000000000000
Backtrace (CPU 0), Frame : Return Address
0xffffff805e5f3a00 : 0xffffff8000204d15
0xffffff805e5f3b00 : 0xffffff80002d1208
0xffffff805e5f3c50 :
Model: MacBookPro8,1, BootROM MBP81.0047.B27, 2 processors, Intel Core i5, 2.3 GHz, 4 GB, SMC 1.68f99
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 384 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 5.100.198.104.5)
Bluetooth: Version 2.4.5f3, 2 service, 12 devices, 1 incoming serial ports
Serial ATA Device: Hitachi HTS545032B9A302, 298.09 GB
Serial ATA Device: OPTIARC DVD RW AD-5970H
USB Device: FaceTime HD Camera (Built-in), 0x05ac (Apple Inc.), 0x8509, 0xfa200000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2513, 0xfa100000 / 2
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 5
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x821a, 0xfa113000 / 8
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0245, 0xfa120000 / 4
USB Device: Hub, 0x0424 (SMSC), 0x2513, 0xfd100000 / 2
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd110000 / 3Hmm. The problem still may be the RAM - Apple buys the RAM it puts in its machines from third-party vendors (usually Hynix) so it could be a RAM problem.
There are a couple of things that you can do yourself before taking your machine into an Apple Store or an AASP... download and run an application named Rember that will run a RAM test for you - let it run for a couple of hours or even overnight. If it turns out that your RAM is faulty, Rember will let you know. If it is faulty, then you have a couple of options - replace the RAM yourself or (particularly if you're under warranty still) take the machine to an Apple Store or AASP and have them replace the RAM.
If Rember finds no fault with the RAM, then you'll need to take it into an Apple Store/AASP and get a free diagnosis on the machine. Three beeps do usually indicate faulty RAM, but if it tests good with Rember you likely have another problem - it could be something as simple as the RAM, somehow, not seated correctly or signs of another hardware problem.
Run Rember first... call back with results.
Good luck,
Clinton -
Purchased a new Apple TV and the remote double clicks each time I press the button. It worked fine during set up and for the first two days. I have since moved it and this problem started. Restarted,reset,unplugged,changed remotes, no change. Latest software update. This is really annoying. iPhone remote app works just fine. Any suggestions?
That's one of the weird things.. it recognizes it maybe 10% of the time. And usually, only after I do the two-button reset. Problem is.. since it won't charge above 2%, anytime I try to do a restore or anything like that using iTunes, my device shuts off and I lose whatever progress I'd made.
So, an update... after reading through a bunch of similar complaints (there are literally 1000's of them so there's NO WAY this isn't somehow ios7 related, thanks a lot APPLE ) I decided to try a restore in recovery mode. After 3 hours and several disconnections... I ended up having to just set it up as a new iPad, as the restore did nothing. Weirdly though... as I was doing the restore in recovery mode.. I noticed I'd gotten up to a 10% charge.. higher than it's been since September, so after setting it up as a new device, I turned it off and plugged it in using the wall charger. 2 hours later and I was up to 38%. Still not great, as my iPad, before ios7 could've fully charged twice in the amount of time it took for me to now get 28% more of a charge. And that's with a fully cleaned out device.. so that really ***** and I'm now more confused than ever.
But I'm gonna leave it overnight charging and see what I come up with tomorrow. Sadly, when I paid $600 for it in February, I never expected to have to play "wait and see" with it... -
P35 Platinum: I have to press the power button multiple times to start
Hello fellow MSI customers,
as written in the subject, I have a problem with starting my PC. When I press the power button, the computer powers on, but there is no output to the screen. In fact, my LCD stays in standby mode. I can hear the fans running, so something is going on. According to the LEDs on the mainboard, it is a memory problem.
Now I turn the computer off, using the power button (have to hold it for a few seconds). When off, I start again and everything runs as it should.
After starting, I ran memtest86 multiple times without any errors. I ran a few games, compiled some programs, installed Vista 64bit, Linux, all without any crashes or hangups. It is just the starting that makes problems. After booting it is very stable.
Seeing that it could be a memory problem, I brought another pair of memory, just to be sure. I couldn't reproduce the problem on that day! Any type of memory I put in (the one before, or the newly brought home) the computer always started on the press of the button. So I thought, OK, maybe they were not seated correctly. But, alas, two days later it is again only starting by pressing the power button three times.
What I tried:
1. Boot using only 1 piece of memory stick
2. Boot using only 1 piece of memory, but different one
3. Use another pair of memory <- worked, but on that day it also worked using my original memory
4. Disconnected everything except graphics card, to make sure it is not a power supply issue (minimized power usage)
5. Tried all of the above with a different processor
6. Used another power supply
Any other ideas?
Here are my specs:
MSI P35 platinum
Core2 Q6600
Nvidia 7900GT
4GB V-Data DDR2 800MHz <--- I think this is the problem, any experiences?
Enermax Liberty 400W
a few other things (HDDs, XFi, DVD-RW)
By the way, how can I boot from an external DVD-RW? It doesn't show in the menu when I press F11 (boot menu).
Thank you for any help, muro
And just to let a bit of steam off:
1. I had major problems with the RAID controller (not MSI fault, rather intel) - I put two disks into a RAID 0, then RAID 1 and they always failed after a few boots - member missing on both disks. I was getting angry, so I put them as normal (non RAID) disks and everything is fine since, although no RAID.
2. Installing anything except windows with an IDE DVD-RW is very hard. It took me ages until I got Ubuntu booting (there are guides on the net, google is your friend), and much longer to get grub (boot loader) working. Long story short - if you have multiple disks, use the Linux disk as the bootable, do NOT put grub on the disk where Vista is installed.
3. I have no idea, how to update the BIOS, if I had to. I'm using 1.1 that came on the board. I use 64bit Vista and Linux, none of which is supported to upgrade the BIOS. Any hints how to do it (if I needed to)?Hello,
now today is the day I've finally received my replacement board. The good news first - it DOES work! Yepeeee!
Now some more information:
The jmicron controller seems to be missing - a screen with something about "Marvel" is shown before the intel raid screen. However, it is only visible for a fraction of second, so I cannot read it. I think it detects my IDE DVD-RW so I'm quite certain it's the replacement for jmicron. I won't miss it - it took me ages to install Linux with the jmicron controller.
The problem where I had to restart the computer sometimes because it didn't even post (RAM error) is gone. It boots just fine now.
I had an extremely long first post - about a minute, but after that it boots very fast now.
anyway, regarding some questions around here - the manual states MSI recommends using an 350W power supply. My 400W is more than enough. Please note - it is an Enermax, not one bundled with a cheap case. My cheap RAM sticks also work very well now. I did try them on different boards before, so now I know I just had a faulty board.
In the end, I can only say this: This is my 3rd board already and it's the first one that works well. As the hardware changed, I presume there were major issues with this board that lead them to make a new revision. What is strange, though, is that the revision is still 1.1, as were my previous two. I pity everybody who had the same problems as I did, but I can now say that I'm very happy about the board now.
Cheers, muro -
I have a MacBook Pro 13.3 OS- MAC OS X LION.
Whenever I am staring the computer, it says You need to restart your computer by pressing the power button.
I did this number of times and everytime it freezes to the same screen.Solution needed urgently pls.
Thank you for any help in this regard that comes fast.The details of the kernel-panic report is as follows-
Interval Since Last Panic Report: 1458653 sec
Panics Since Last Report: 6
Anonymous UUID: 70BA6A**************************************************
Sun Sep 16 23:00:13 2012
panic(cpu 0 caller 0xffffff80002c4794): Kernel trap at 0xffffff8000290560, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000800028, CR3: 0x000000000a509005, CR4: 0x00000000001606e0
RAX: 0x0000000000000001, RBX: 0x0000000000820000, RCX: 0xffffff801122dc40, RDX: 0x0000000000020501
RSP: 0xffffff80ef3d3da0, RBP: 0xffffff80ef3d3dc0, RSI: 0x000000002b1d78b6, RDI: 0xffffff800342d280
R8: 0xffffff80ef3d3f08, R9: 0xffffff80ef3d3ef8, R10: 0x000000010d901000, R11: 0x0000000000000206
R12: 0xffffff800342d280, R13: 0x0000000000000000, R14: 0xffffff8011cd6500, R15: 0x0000000000800000
RFL: 0x0000000000010206, RIP: 0xffffff8000290560, CS: 0x0000000000000008, SS: 0x0000000000000000
CR2: 0x0000000000800028, Error code: 0x0000000000000000, Faulting CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff80ef3d3a50 : 0xffffff8000220792
0xffffff80ef3d3ad0 : 0xffffff80002c4794
0xffffff80ef3d3c80 : 0xffffff80002da55d
0xffffff80ef3d3ca0 : 0xffffff8000290560
0xffffff80ef3d3dc0 : 0xffffff800026c9c3
0xffffff80ef3d3f40 : 0xffffff80002c3fbb
0xffffff80ef3d3fb0 : 0xffffff80002da481
BSD process name corresponding to current thread: fsck_hfs
Mac OS version:
11E2620
Kernel version:
Darwin Kernel Version 11.4.2: Wed May 30 20:13:51 PDT 2012; root:xnu-1699.31.2~1/RELEASE_X86_64
Kernel UUID: 25EC645A-8793-3201-8D0A-23EA280EC755
System model name: MacBookPro9,2 (Mac-6F01561E16C75D06)
System uptime in nanoseconds: 4850001132
last loaded kext at 1796984176: com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.7f2 (addr 0xffffff7f80e16000, size 57344)
loaded kexts:
com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.7f2
com.apple.driver.AppleUSBTCButtons 227.6
com.apple.driver.AppleUSBTCKeyEventDriver 227.6
com.apple.driver.AppleUSBTCKeyboard 227.6
com.apple.driver.AppleIRController 312
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 33
com.apple.iokit.SCSITaskUserClient 3.2.1
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCISerialATAPI 2.0.3
com.apple.iokit.IOAHCIBlockStorage 2.0.4
com.apple.driver.AppleFWOHCI 4.8.9
com.apple.driver.AirPort.Brcm4331 560.7.21
com.apple.driver.AppleSDXC 1.2.2
com.apple.driver.AppleUSBHub 5.0.8
com.apple.iokit.AppleBCM5701Ethernet 3.2.4b8
com.apple.driver.AppleEFINVRAM 1.6.1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleAHCIPort 2.3.0
com.apple.driver.AppleUSBEHCI 5.0.7
com.apple.driver.AppleUSBXHCI 1.0.7
com.apple.driver.AppleACPIButtons 1.5
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleHPET 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.5
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 195.0.0
com.apple.nke.applicationfirewall 3.2.30
com.apple.security.quarantine 1.3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 195.0.0
com.apple.driver.AppleUSBBluetoothHCIController 4.0.7f2
com.apple.iokit.IOBluetoothFamily 4.0.7f2
com.apple.driver.AppleFileSystemDriver 13
com.apple.driver.AppleUSBMultitouch 230.5
com.apple.driver.AppleThunderboltDPInAdapter 1.8.4
com.apple.driver.AppleThunderboltDPAdapterFamily 1.8.4
com.apple.driver.AppleThunderboltPCIDownAdapter 1.2.5
com.apple.iokit.IOUSBHIDDriver 5.0.0
com.apple.driver.AppleUSBMergeNub 5.0.7
com.apple.driver.AppleUSBComposite 5.0.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.1
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.driver.AppleThunderboltNHI 1.6.0
com.apple.iokit.IOThunderboltFamily 2.0.3
com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.1
com.apple.iokit.IOFireWireFamily 4.4.5
com.apple.iokit.IO80211Family 420.3
com.apple.iokit.IOEthernetAVBController 1.0.1b1
com.apple.iokit.IONetworkingFamily 2.1
com.apple.iokit.IOUSBUserClient 5.0.0
com.apple.iokit.IOAHCIFamily 2.0.8
com.apple.iokit.IOUSBFamily 5.0.8
com.apple.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOHIDFamily 1.7.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 177.5
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 331.7
com.apple.iokit.IOStorageFamily 1.7.2
com.apple.driver.AppleKeyStore 28.18
com.apple.driver.AppleACPIPlatform 1.5
com.apple.iokit.IOPCIFamily 2.7
com.apple.iokit.IOACPIFamily 1.4 -
I have a mac book pro running Lion 10.7.4 and every time I use Google Earth The computer crashes by lowering a black curtain and then asking me to hold the power button down until it closes and press the power button again to restart it. Can I fix this? It bugs me when I'm looking at real estate.
I really don't have an answer for that one. I guess that while trying to get things working correctly, I would use the most basic monitor I had which in your case would be the Eizon using the Thunderbolt port and adaptor.
When you boot into Safe Mode the startup is quite slow, but you should get the Apple logo and then the spinning gear below it (release the SHIFT key when it appears.) Then after a little more time you should see a gray progress bar appear below the spinning gear. When that disappears the computer will startup to a login screen. -
Hallo ,I have an IMAC 21.5. which does not start.When i press the power button i hear only beep with an interval of 4-5 seconds.Some times when i take off the RAMS and put them again then get a white screen and shows that i have to insert a bootable device.Then i bought OSX mountainlion on line and wrote it on a DVD and tried with a USB key board to start the DVD.But does not work.Please help me to get this imac work.
Thankyou in advance for your help.
TerrenceHey terremo,
Thanks for the question. From the information you provided, it sounds like the iMac is successfully turning on, however video is not displayed. These symptoms can usually be isolated further by the troubleshooting steps in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Thanks,
Matt M.
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