Big fan noise, no picture, no power light

Help. When I switch on my Power Mac G5 the fan sounds like an aircraft taking off - in fact it sounds like the computer will explode any minute. There is no light above the power button and no picture on the screen. I have tried the reset button inside the computer but there is no improvement. I have tried removing the power cord and screen cords and blowing to remove dust but still no effect. I have unplugged all periferals. I would happily restart from a disc and reinstall but I can't open the CD tray because the keyboard has no effect. Do I need to go to a service store? I live about 50 miles from the nearest store in deepest Devon. Any one got any ideas? Thanks for listening.

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Similar Messages

Worrying about iMac with Logic Pro. (i mean big fan noise)

hi.
i am thinking about buying a new iMac with Apogee Ensemble. but i am a bit worried about the fan noise from imac when i use lots of plug-ins and etc.
well... the best way is to buy a Mac Pro and stash the machine in a machine room or a cabinet or something. but the budget is low here.
does anyone have any good ideas? do i have to take the fan noises? or is it really so powerful so that makes no such big fan noises?
thanks

gen_ wrote:
I have no doubt that you and I haven't been reading the same posts, but I was under the impression that most people were much more infuriated that there was no announcement or run up to the launch (and thus they bought L9 just before).
Actually, we have been reading the same posts! Apple, historically, have never (and I do mean NEVER) pre-announce releases of Logic Pro. They are always announced on release day, even going back to before the Mac App Store, when boxed versions were still available. Apple do have quite a generous refund policy, so I suggest that anyone who feels cheated could always 'report an issue' via the link in the receipt email and try and obtain a refund. Personally, I would never buy a current version of Logic Pro until July was over, but as I've been using it for over 11 years now (before Apple bought Emagic), I guess I'm very familiar with the release times.
So why not keep support for EXSManager/Keymap, or at least a download link for paying customers. There is no other program that can do what it did unless you want to go back to an old version of Logic and utilise functionality that they removed yet is still relevant today.
Redmatica wouldn't have been allowed (under the terms and conditions of the buyout), to keep making the EXSManager, it would have been illegal as it's now an Apple product. That's like saying why didn't Emagic keep making a version of Logic for the PC after Apple bought them, because they obviously weren't allowed under the terms and conditions because it became an Apple product. While I can understand your frustration, you also have to understand the legalities that take place during takeovers and buyouts, as it's really not as simple as it may at first appear.

Power Mac G5 1.8 Ghz Dual - fans come on but no power lights

Power Mac G5 1.8 Ghz Dual - fans come on but no power lights. My hunch is that it is the power supply but as the system will not boot I can not run diags or check logs. I appreciate any help.
Thanks
Jeff

No power (LED on/off, no fans, no boot tone, no video)
1. Check power supply cables
2. Check logic board power rails
3. Check processor connector
4. Check logic board tape for dual config
5. Replace power supply
6. Replace processor
7. Replace logic board
No boot (LED on/off, fans spin, no boot tone, no video)
1. Replace memory
2. Replace logic board
Memory (blinking LED, fans spin, no boot tone, no video)
1. Check memory config and replace DIMMs
2. Replace logic board
No boot tone (LED on, fans spin, no boot tone, video) or
No video (LED on, fans spin, boot tone, no video)
1. Reseat video card
2. Replace video card
3. Replace front panel board cable
4. Replace speaker
5. Replace front panel board
6. Replace logic board
Duct door sensor
1. Reseat interlock sensor board cable
2. Replace interlock sensor board
3. Replace logic board
4. Replace enclosure
-Bmer
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Big fan noise problem: the rear fan won't shut off, the BIOS won't update, systemupdate locks up

I received new ThinkStaion (oh boy, lots of memory and CPU speed, yay!)
I unfortunately left the originally installed Vista OS on there. Very much regretting that as I believe it contributes to the following problems (BIOS).
So the original problem was that after just a month of using my new ThinkStation, the System Board died, and it had to be replaced. Honestly, all I did was choose the sleep or hibernate option in Vista to shut down. Afterwards,poof! didn't even get the proper Power lights on the system. I diagnosed this with the online docs and then sat for a few hours on our tech support line doing all the same things to re-diagnose it.
So after the replacement, the rear fan will not shut off. Jet engine noise all day. I went into the system settings and selected "Quiet" for the Fan settings but that did not help.
Research on this forum resulted in the possibility of a BIOS update fixing the problem. Comparison to my co-workers systems which arrived at the same time shows this BIOS is woefully out of date, so even if it does not fix the fan issue I want to update it. However, everything I've tried to do is failing for one reason or another.
(The fan issue does need resolution since in one week I will end up sharing an office (first time in many years, thanks IBM for nothing!) so since I don't want us both to have to wear noise cancelling headsets, I'd like to fix this without having to just pull the @#$@ power to the fan. Grrrr. )
I downloaded what I felt were the appropriate Lenovo apps to update both the BIOS and the serial number but none seem to work properly from the command line in Vista. One of the two (can't recall which) asks me to reboot and it never actually shuts down. Eternal "Shutting Down" message. Ga! The other throws some gosh awful
systemupdate le
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-69701
eternal reboot
BIOSD attempt:" 2xjy26usa
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-69701
error 1275 no admin priv - I AM the administrator account, there is no other acct to use!
Then I decided Vista might be the problem and found sites recommending flashing the BIOS from a bootable USB. So I started down that path and after burning the wrong version, finally geting the AIK Vista tools installed and to the point of trying to make the USB bootable, it won't allow me to put the OS boot on it. Ah, for the days when a simple "sys a:" took care of that.
So, after reformatting the USB and pounding my head in the wall, keyboard, etc. I am at my wit's end. What to do. I just want the fan noise to go away.
This does seem to duplicate other forum messages but I can't get anywhere on this. Help!
Solved!
Go to Solution.

FYI to all the helpful folks here (and any looking to shut their jet engine off as well): Flashing the BIOS did the trick.
First I had to find a website with DOS OS files and put those on the USB instead of Vista. Oldie but a goodie, but at least it booted! No other versions would.
I had been intending to use the WinPhlash utility that Lenovo supplied with the BIOS update but since I was booting from DOS that was useless. However, I found a DOS version of it and used that instead. Boom baby! Flashed and rebooted.
It did take two boots to get it back to normal (first one gave very alarming messages about no operating system being found but I think it was just a remnant of the reboot that was triggered from the DOS session). A second boot returned life to normal and blissful silence from the server. And I was finally able to get the model and serial number back in there to get rid of the bootup message it throws for that too.
Ahhhhhhh.
Thanks to all for the hints - I believe I had gotten the idea of flashing the BIOS to solve this from some other thread I found here. This is a very nice forum to have bookmarked.

No startup: blank screen, power light on, fans normal speed

iMac G5 2.0GHz, 2GB RAM, 160GB HD, OSX 10.5, 17". Bought in October of 2005. Two matched Samsung 1GB RAM chips installed quite some time ago with no problems.
While it isn't the iSight model, my iMac has done the blank screen with fast spinning fan thing a few times, but it always recovers after I turn it off. Here's what happened:
iTunes is playing, I pause it using the Play/Pause button on the new wireless aluminum keyboard, it sits for a while and the screensaver comes on. I press the Play/Pause button on the keyboard again, the screensaver freezes and the fans spin up to maximum speed. I hold the power button down, it shuts off, I turn it on again and get nothing. It now powers up to a blank screen, fans at normal speed, the power light stays on, and the CD drive never makes its little startup noise. Holding the power button down does nothing, I have to pull the power cable out to turn it off. The only thing it has done differently since this happened is one time the power light didn't come on, otherwise no change. I also tried all of the different key combinations on startup (using the USB keyboard) and get no response, so no target disc or safe modes. Also, the CD drive won't accept any discs, so I can't start from the system discs.
I don't want to pay for any expensive or major repair work since I was going to get a new iMac this Fall anyway. If anybody has any clever do-it-yourself tricks I'm wide open to them. Otherwise it looks like I'll just get a hard drive enclosure kit and get all of my stuff off that way.
Help please!

First, you may still be eligible for one of Apple's Repair extension programs also, try resetting the SMU.
Let us know what happens,

IMac G5 bootup with fan noise but no display

Hi all the experts out there,
I'm new to iMac and need help to resolve the following issues:
1) My iMac went on sleep mode and follow by a big fan noise.
2) Able to power down but when I press the power button follow by the Command, Option, P and R keys, no response from the iMac (no screen display but power indicator is lighted)
3) Anyway to eject the Disc manually from the slot? By pressing the eject key from the keyboard does not eject my CD. I'm trying to eject the music CD from the slot, so that I can put in the system disc to try on other mode of recovery.
Any help is welcome.

http://docs.info.apple.com/article.html?artnum=58566 iMac (Slot Loading): Troubleshooting CD/DVD Eject Failures
http://docs.info.apple.com/article.html?artnum=106752 Macintosh: How to Eject a Disc When Other Options Do Not Work

T530: Unbearable fan noise

Probably similar to this thread, the T530 I recently received has fan noise issues. I've invested considerable time in solving this, but found that a solution can be achieved with reasonable effort only by Lenovo:
Introduction:
Most ThinkPad models do not provide the operating system (or the user) the ability to set the fan speed directly (e.g. in rounds per minute) or in a fine-grained way (e.g. as a percentage of maximum speed). Instead, there are "fan speed levels", usually 9 levels (level 0 through level 7 as well as the level "disengaged"). For each level, a particular fan speed is defined and the Embedded Controller tries to achieve this particular fan speed by measuring the fan speed and adjusting the electrical properties of the fan (e.g. voltage or pulse length or something like this).
The fan noise problem:
Every time the internal temperature sensor reaches 50 °C or so, the fan starts with about 1900 rounds/minute and then quickly goes to about 2737 rounds/minute, where it is loud. Then it takes about 20 seconds, the temperature drops to 45 °C, then the fan is switched off. Then, after maybe other 30 seconds, the cycle repeats and the fan is switched on again, ...
There are major problems with this behaviour, because:
The fan is not running continously, but pulsating.
The fan is running at level 1 at a much higher speed than needed, creating unnecessary noise.
I have measured the individual fan speeds for individual fan speed levels:
The fan speeds at different levels are as follows:
Level 0: 0 rounds/minute
Level 1: 2737 rounds/minute
Level 2: 2944 rounds/minute
Level 3: 3033 rounds/minute
Level 4: 3074 rounds/minute
Level 5: 3597 rounds/minute
Level 6: 3773 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution draft:
A minimum solution to the problem above would be introducing another fan speed level between 0 rounds/minute and 2737 rounds/minute, with about 1900 rounds/minute. The reason this makes a difference is that there is a fundamental difference between laminar flow and turbulent flow, where the laminar flow makes nearly no noise and the turbulent flow makes a lot of noise. (Whether an airflow is laminar or turbulent is easiest influencable by affecting its speed.)
As you can see on the observed mapping from fan speed level to fan speed, level 6 and level 7 map to the same speed.
Thus, no particular fan speed would be lost if the mapping would be changed to the following:
Level 0: 0 rounds/minute
Level 1: 1900 rounds/minute
Level 2: 2737 rounds/minute
Level 3: 2944 rounds/minute
Level 4: 3033 rounds/minute
Level 5: 3074 rounds/minute
Level 6: 3597 rounds/minute
Level 7: 3773 rounds/minute
Level disengaged: 4754 rounds/minute
Solution implementation by user is impossible:
The problem, however, is that, while a user can decide which fan speed level should be active at a particular time, the user cannot decide which fan speed should actually be achieved for a particular level. Thus, the user can either decide to have 0 rounds/minute (which is not particularly sustainable, because the equipment becomes hotter and hotter) or to have 2737 rounds/minute (which is not particularly sustainable either, because both the user and other people arund the user's Lenovo computer are distracted from work).
The mapping from fan speed level to fan speed is actually stored in the Embedded Controller Programm ("ECP"). This Embedded Controller Programm is freely changeable or configurable by the user. Only Lenovo has the source code to this Embedded Controller Programm, and actually only Lenovo may know how to disassemble such a binary Embedded Controller Program in case the user wanted to change it. Thus, even advanced users cannot fix this problem by fixing it where it should be fixed.
It should be noted that, because fan speed is a long lasting issue at Lenovo, a third party has been even developed an after-market hardware solution: TPFC. However, this solution probably voids the warranty, and it work arounds the problem at the wrong place, and it costs time and money and effort to actually install it.
Only Lenovo can fix this problem:
How Lenovo should fix the problem
Thus, this is my call to Lenovo to fix this problem (at least for the T530 series, but probably W530, T430 are also affected). Ideally, the solution should be as follows:
Change the Embdedded Controller Program such that the mapping from fan speed level to fan speed is as follows:
Level 0: 0 rounds/minute (no noise level)
Level 1: 1500 rounds/minute (low noise level, sweet spot)
Level 2: 1700 rounds/minute (low noise level, sweet spot)
Level 3: 1900 rounds/minute (low noise level, sweet spot)
Level 4: 2100 rounds/minute (some noise level)
Level 5: 2600 rounds/minute (high noise level)
Level 6: 3100 rounds/minute (high noise level)
Level 7: 3773 rounds/minute (high noise level)
Level disengaged: 4754 rounds/minute (high noise level)
The reasons for this fan speed design are as follows:
The "sweet spot" where both the fan will run most of the time and where the user would not complain is between 1500 rounds/minute and 2100 rounds/minute. If the fan needs to be faster to keep the system cooled, then the user is likely to run the system with considerable load to CPU or GPU. In this case, there is no option to reduce the fan speed, but also in this case, the user probably accepts the fan noise for the computing power delivered.
The "sweet spot" in terms of CPU load is where the users do not accept fan noise while actually generating only minute CPU load (e.g. during web browsing or writing documents, where the CPU and the GPU is mostly idle). For many users, this is their normal working state (e.g. working in a quiet office, a very quiet library, a quiet bedroom, a quiet boardroom, ...). These scenarios are where Lenovo ThinkPads currently fail to deliver, unnecessarily
The "sweet spot" needs higher resolution (more fan levels allocated to these fan speeds), because slightly different load patterns may make it necessary to go from one level to the next higher level, but then the next level still should be bearable. Conversely, the higher levels (e.g. from 2600 rounds/minute on) do not need such a high resolution, because for most of the users, these levels will be only attained rarely anyway, and then they are accepting the noise.
Currently, there is no fan speed level at the sweet spot. With the proposed fix, there would be 3 fan speed levels at the sweet spot, with a neighbouring fan speed level (2100 rounds/minute) still being bearable when considering the performance delivered.
There is no fan speed level below 1500 rounds/minute. This is ok, because the fan is nearly inaudible at this speed anyway, and below a certain speed, there is a risk (depending on the fan) for the fan to actually not rotate at all (e.g. due to friction).
How much time and effort would Lenovo need for fixing the problem:
The Lenovo engineer responsible for the Embedded Controller Program of the T530 should need less than one day to change the source code of the Embedded Controller Program and to recompile it. The engineer may need one additional day to test this program (e.g. for different types of fans), and there may be a need for an additional day to release the update to the BIOS and ECP. All in all, Lenovo should not need more than 3 engineer-days (maybe worth 1800 USD) to fix the problem.
Why Lenovo should fix the problem:
Probably the whole current T series (T530,T520,T430,T420) as well as the current W series (W530,W520) fails the users in any of these scenarios (among others):
User working in a quiet office.
User working in a quiet library.
User working in a quiet bedroom.
User working in a quiet boardroom.
Thus, the Lenovo T series is currently not usable for many business users and almost all students. This problem should cost millions of USD of revenue, while fixing it would cost it maybe 1800 USD.
Incidental remark: Lenovo subsidiary can do better:
Lenovo has bought the majority of the Germany consumer electronics company Medion. Medion currently offers a consumer level notebook "E7222" for 499€ including German VAT. Despite of this low price, this notebook delivers very good fan control (that is: the notebook is nearly silent when the CPU is near-idle). (However, being consumer-grade, it does not offer a docking-station or a FullHD screen or WWAN.)
What will I personally do:
Some weeks ago, I had a powerful W530. I returned it due to fan noise for cash refund. Now I have the T530 (Serial number: R9RRF26) which has exactly the same problem. The deadline until I can legally request a cash refund runs until 2012-09-07. I hereby ask Lenovo:
To fix the problem and release an ECP or BIOS update until 2012-09-06 (it is doable, see above) or
if the problem cannot be fixed in this time (e.g. due to bureaucracy): provide me with a written statement (e.g. e-mail or forum post is sufficient) that my legal cash refund deadline (German law: §355 BGB) will be voluntarily extended by Lenovo (to some date Lenovo thinks it needs to fix the problem).
If none of the above happens, I will have to return the T530 as well. This is the 2nd chance Lenovo has gotten from me, there will be no 3rd chance. I would have to turn to Fujitsu (they do have business-class machines with big batteries, FullHD, WWAN) and they probably have better fan control.
Solved!
Go to Solution.

kaawee,
Thank you for the considerable thought that you put into your summation / analysis and proposal for a change.
I don't agree that you are wasting your time as we did make EC changes on the X220 and T420s to change fan behavior (along with several other systems). However, not all customers agree that the changes made the system behave the way they wanted and were completely satisfied (hence some of the dissenting opinions expressed here).
We are interested in feedback on T530, W530, T430 fan concerns and we are investigating. It is possible that a future change might be made, but I cannot say for certain that it will, nor can we commit to making this change within 4 days (2 now remaining) from your original posting.
Best regards,
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
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Fan Noise 2 loud !!!

hi whenever i see stage6 divx movie file from direct website plug-in. & when i open any audio apps & when istatpro in dashboard, process over 70percent...the mac book goes into big fan noise. which is pretty much not very good.
help!
thanks

Is it regular fan sound or is there a different sound you her when this happen? The fan becomes more audible the faster it goes. With CPU intensive stuff it works harder to keep your MacBook cool. This is normal.

My mac mini only shows a steady power light and fan noise when powered up. No video or sound and no commumication with wired keyboard or optical mouse. Tried replacing internal battery and resetting PMU/SMC but nothing seemed to happen. Any suggestions?

My mac mini only shows a steady power light and fan noise when powered up. No video or sound and no commumication with wired keyboard or optical mouse. Tried replacing internal battery and resetting PMU/SMC but nothing seemed to happen. Any suggestions? Many thanks! Richard

You've already done the two things I would have suggested.
If your Mini has an internal battery then I assume it's a G4. That means you've gotten a lot of good years of service from it, and it's old enough that it's certainly not covered by AppleCare anymore, and it's probably not worth spending money trying to repair it.
You should be able to tear it apart using instructions from ifixit.com to get the hard drive out, and then put the hard drive into a nice USB or FireWire enclosure (I like the ones from Other World Computing, macsales.com) so you can transfer your data to a replacement Mac.
I hope someone has another suggestion for you.

My power mac G5 won't boot up but has red flashing light and intense fan noise.

I Have a Power Mac G5 that flashes a red light that I've never seen before. There is nothing on the monitor and the fan noise is incredible.
HAs anyone ever had this problem?

Hi Michael,
It's normal for the fans to go full speed if the OS won't load to handle them.
Where is this red light, on the logic board, or front panel?
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.
http://support.apple.com/kb/HT1547
LED 1—CPU A: red—contact Apple or an Apple Authorized Service Provider
LED 2—Overtemp: red—contact Apple or an Apple Authorized Service Provider
LED 3—Power On: red—the main power is on
LED 4—Trickle: yellow—Power Mac G5 is plugged into the wall correctly
LED 5—Open Firmware good: green—no problem
LED 6—CPU B: red—contact Apple or an Apple Authorized Service Provider
LED 7—Checkstop: red—contact Apple or an Apple Authorized Service Provider

Tecra A10-S3501 Power Light Flashes, Fan Runs Full Speed.

Greets all,
I have a customers Tecra in the shop, and after getting a good description of what was happening at the tme of failure, I still cannot seem to figure it out. She was watching a flash video when it froze. Upon reboot, it will not init the LCD, it does seem to at least partially POST, cd drive spins up, and all LCDs blink like normal. Still no LCD init, and the power light blinks green, no pattern, it is not a binary post led code. Fan spins up directly to full speed and stays there for the duration. I counted 20 one second blinks with fan at full speed, before powering down. Any ideas? Customer has no warranty, so would be nice to fix it for her. :-) Thank you, and have a great day.
Y

Hey,
Can you see a picture on external monitor? If yes it might be only a FL inverter issue of internal display. This is not an expensive part so this would be easy to fix the problem.
Anyway, if you cant see a picture on external monitor, I think its related to another part, maybe mainboard or something else. This should be checked from an authorized service provider
By the way: If you have connected an external monitor, use FN+F5 key combination to switch between them

HP Pavilion 23 will not turn on- can hear fan, power light is on, nothing on screen

HP Pavillin 23 will not turn on/power up???.
When we press the power button:
- can hear fan
-power light on back of computer is lit (where power cord is plugged in)
-power light on top of computer is lit
-but nothing happens with the screen. No light at all, no screen at all; it remains black.
Help please!
Thank you so much!

It is important to know the exact model #, and current OS of this AIO. Just saying 23 is like owning a Chevy.
I am a volunteer. I am not an HP employee.
To say THANK YOU, press the "thumbs up symbol" to render a KUDO. Please click Accept as Solution, if your problem is solved. You can render both Solution and KUDO.
The Law of Effect states that positive reinforcement increases the probability of a behavior being repeated. (B.F.Skinner). You toss me KUDO and/or Solution, and I perform better.
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
HP m9200t E8400,Win7 Pro 32 bit. 4GB RAM, ASUS 550Ti 2GB, Rosewill 630W. 1T HD SATA 3Gb/s
Custom Asus P8P67, I7-2600k, 16GB RAM, WIN7 Pro 64bit, EVGA GTX660 2GB, 750W OCZ, 1T HD SATA 6Gb/s
Custom Asus P8Z77, I7-3770k, 16GB RAM, WIN7 Pro 64bit, EVGA GTX670 2GB, 750W OCZ, 1T HD SATA 6Gb/s
Both Customs use Rosewill Blackhawk case.
Printer -- HP OfficeJet Pro 8600 Plus

Removing Fan noise from lighting

First, thank you for your responses... Secondly, I know these problems should be thought of in advance and not to rely on post so I would appreciate help rather than criticism...
There is noise from the fans of the lights. A single person is speaking to camera in an inside room. I have reduced noise (set noise print –> reduce noise) in ST Pro, which got rid of fan noise (-45db), but distorts the voice so it sounds like he is speaking underwater. I added an EQ filter, but can't get this to sound very good...
I have Soundbooth CS5 and FCS. Thanks for any help.

STP noise reduction has a tendency to do that rather quickly. The only thing that helps is to reduce the amount of noise reduction which defeats much of the purpose.
First first adding some parametric eq to reduce the bad frequencies and then do a noise print and noise reduction, using less reduction, no lower than about 54dB.
You can also go into the spectrum analyzer and try to carve out the bad frequencies. This is more difficult than in Soundbooth's version, which is were I generally head off to for that sort of work.
Recently I've been trying Isotrope's RX noise reduction and find it miles ahead. Where I was using it I found I had to back up and reduce background in a lot more shots I'd previously just skipped over. It's one of those things that can be too good. It's spectrum analyzer is also quite good.
Good luck

Have an iMac. Problem is I hear the fan noise, yet no power on the screen yielding no power. I have checked the power cord and it seems to be fine. Not sure if computer is a total loss. What would be the next step?

Have an iMac. Problem is I hear the fan noise, yet no power on the screen yielding no power. I have checked the power cord and it seems to be fine. Not sure if computer is a total loss. What would be the next step?
<Email Edited by Host>

What does the EMC# say on the base?

My Macbook Pro 13¨ i7 wont turn on. I press the on button and the white light wont turn on, I don´t hear and fan noise, or the beeping sound. This Mac is 1 1/2 months old. Can anyone help.

I press the on button and the white light wont turn on, I don´t hear and fan noise, or the beeping sound. This Mac is 1 1/2 months old. Can anyone help.

You are under warranty. You can call Applecare and get advice from the tech rep, or you can bring it to an Apple store or authorized Apple service provider.

Big fan noise, no picture, no power light

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