My macbook won't start, only power light are flashing about two seconds

My Macbook Pro don't start anymore. The powerlight is flashing about 2 seconds.
The DVD-drive is starting and the disk turns on and is running.
I have resetted all RAMS as described in the apple support.
Before the actual situation, the computer hang up in iPoto with a flickering screen.
The crash-report mentiond somewhat about a read-error in a ?-RAM.
I could create a second partition and I wanted to install OSX-Lion, when the message came that the computer restarted, it didn't start and nothing could help.
Do sombody know what I can do to solove the problem?
Sincerely macsmbw

I'm having precisely this problem myself. For what it's worth, my macbook suffered a pretty devastating crash immediately before this happened. (I was playing a game and it completely crashed during play and shut down.)

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Have you tried booting into Lion recovery mode? Boot holding the command and R keys down.

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So here is the situation. I left for vacation a week ago my mac pro was turned off and plugged into a UPS. When I came back and tried to power on the computer it turns on but there is no "Chime" but the power light does come on like normal (at first) and then just blinks constantly. The monitor stays completely black.
Here is what an apple tech had me do:
Unplug all devices and try powering on with the plug in a wall socket. Unplugging everything from the computer for 15 seconds (SMC reboot?)
No luck. He wants me to take it to a store... I hate taking my computer to a store and handing it over for an unspecified amount of time...
Could opening up the comp and manually resetting the SMC or clearing the PRAM work? I asked the tech what more someone at a store could do and he said they would just test the voltage. Do you need a special tool for that because I have a volt meter and I would much rather not take it to a store. If it is the power supply I would rather they send it to me to install.
Jeremiah

I wasn't aware PRAM batteries did any charging
Apple has used rechargeable batteries for volatile storage for some time.
and just 'held' information in NVRAM and PRAM when needed and there was no power coming in
I can't see data held in NVRAM/PRAM doing something like keeping time without some power. One can't assume a permanent Internet connection to update it when the system is turned on now can we?
I assume it is on a 1000VA UPS that has good battery and fully charged too, and didn't discharge during the vacation
If the UPS was turned off it's as good as being totally unplugged so it may well have still been at 100% upon return. There's no power delivery when the UPS is off remember.

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Dear Apple,
I have an older MacBook that I am not using regularly anymore - only to synchronize my music to my iPod.
When I tried to start it a couple of days ago, it wasn't starting up. Thinking the battery was flat, I connected it to the charger cable and tried to boot.
Unfortunately, that also did not work. It seems the battery is not charging, and the laptop simply doesn't boot, also when plugged to the charger.
When I check the control-lights on the back, none of the 5 green lights come on. Also not when plugged to the charger.
What is the advise on how to fix this? I could get a new battery, but it would be a waste of money if I am not sure if this will actually solve the problem.
Kind regards,
Sjoerd Manschot

MIght be the adapter > Apple Portables: Troubleshooting MagSafe adapters
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It not polite to repost asking fro more help three minutes after initial post.
Recovery mode is Command & R keys after depressing and releasing the Power button for a normal startup.
OS X: About OS X Recovery - Apple Support
That only works for Lion and later.
What exactly happens when your try to boot to Recovery?
Try starting in Safe Mode resetting the SMC and NVRAM/PRAM
OS X: What is Safe Boot, Safe Mode?
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
What model MacBook Pro and what OSX version was on the Mac?
Have you tried booting from an OSX install DVD?
When you try to start doe the Power light light?
This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum.

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Help & advice needed please.
My MacBook won't start without external power, it gives a whir then a click then nothing. Once started up, if I remove the external power it just shuts off.
The battery shows at 98% & charging. Coconut Battery shows the following:
Current battery charge 4126 (& increasing as I type)
Maximum battery charge 4200
Current battery capacity 4200
Original battery capacity 5200
80%
Battery loadcycles 111
Age of your Mac 6 months
Charger connected yes
Battery is charging yes
Does anyone have a clue why the Mac won't power itself on the battery when everything else seems like it works?
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Once I explained my issue with my MacBook battery, my Genius tried one of his batteries. "I just want to make sure it's your battery and not your motherboard." My machine worked fine, so he said "No problem, I'll have you out of here in 10 minutes." He got me a brand new battery, tested it, and put my old one in a box on the rear counter with four others. He pulled the serial number from the "About this Mac" area, didn't need my receipt for purchase date or anything. I had even printed this page: http://www.apple.com/support/macbook_macbookpro/batteryupdate/ to use as ammunition, but didn't need it. He did approve highly of my dashboard widget "iStat pro", available here: http://islayer.com/.
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Hello Toby135
Reset the SMC or System Management Controller to resolve issues with the power on your MacBook Pro and power adapter.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/ht3964
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Did you also try reset of NVRAM/PRAM?
http://support.apple.com/kb/HT1379
When you tried the Command + Opt + P + R keys on restart, held almost
immediately and through the time period it should chime on startup, did
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http://www.ifixit.com/Answers/View/6271/My+MacBook+won%27t+boot,+no+start+chime, +just+the+DVD+spinning+sound.
There are some ideas there which may help. At least as far as trouble-
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Did you try booting from the Snow Leopard DVD?
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My macbook won't start, only power light are flashing about two seconds

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