In normal situation Apple ain't gonna cover it under warranty. But you can try your luck by calling AppleCare, they will advice you what to do. All the best.

Drive problem if that happen to different disc. Common wear and tear.

Generally in bootcamp, many of the sensor parameters are not natively supported. It's recommended you install temp & fan speed monitor app to overcome this.

Changing heatsink won't help. You still get back the heatsink that looks and works similar. You should demand them to check about the heat issue.

Backup your data if you haven't done so.
Check if your drive have enough free space.
Run some check on the HDD with disk utility or other app as suggested.
If you have the knowledge, you could try reformat and reinstall the OS, after you done the backup.
If after reinstall the problem came back, it's best you replace the drive.

This post has been edited by wei: Dec 1 2012, 08:10 PM

Shouldn't you call them?

No, so long the claim have no relation to the part installed.

Makesure you've done all the updates from Apple (firmware if any). Try reset SMC, google how to do it. Lastly send back to service center and get it check.

Just send it back for claim. No need to bring your iMac, just have the iMac serial number with you.

At the moment you can enable virtual keyboard to overcome the spacebar issue. http://gigaom.com/2008/09/24/mac-101-get-a...eyboard-in-osx/ (In 10.8 "International" is known as "Language and Text").

Few things you could do:
- replace the hard drive, install fresh OS and recover data from the old drive.
- install fresh OS to external drive and boot from it, then recover your data, then attempt format and reinstall OS, if fail, you still need to replace the faulty drive.
- get another Mac and boot you Mac into target disk mode then use the second Mac to reinstall/ recover.

Not sure how to perform any of those steps? Check google. Still lost? Pay someone to do it.

So long no thicker than 12mm and its 2.5", it will fit in.

This post has been edited by wei: Feb 16 2013, 12:16 PM

Sounds like hardware issue. There's nothing much end user can do. Sometime the display might come back after several try. But not always.

Could be defective Airport card. Very common for this model. Only a proper troubleshooting can pinpoint the issue.

Usually it's cause by rapid recharging, rapid temperature changes and long storage of the battery with low or no charges left. You have to know how much charge cycle you having, if the number is high this is normal for the battery life to decrease.

Call AppleCare and fight for the replacement. It is still chemical inside the battery and there are no sure way to tell what's happening inside, all we can do is speculate & estimate.

Something wrong with your charger or the DC-in board. Try another charger/ plug and see. Else send to service.

We are not sure how other center works. For us, if its something simple like minor software tweak or physical inspection (without take apart), we can just close one eye. But if we are talking about a total dead unit that can't turn on. Hours gonna be spent by taking it apart and test components one by one. It's definitely not as simple as "take a look", we call it a diagnosis for a reason. Sometimes the diagnose took much more effort than the repair. Not charging it or charging it cheaper seems unreasonable to us.

What does the beep interval like?

Stock RAM from Kingston? That's rare, we haven't seen that much after PPC era. Anyway, OEM parts are bind by the assembler warranty, not by the original maker. Like HDD, LCD, graphic card. You'll go back to Apple not western digital or seagate. But you can always try check with Kingston, they have online RMA system.

Keyboard problem.

In that case the Kingston is not OEM, those are added after market. Stock should be the Hynix only.