Macbook Air Early 2014 Sleep Wake Failure

A few days back, I did a fresh install of OS X Yosemite (10.10.3) by erasing the SSD and installing via a USB Installer. Last night, when I woke it from sleep, it didn't show anything except a black screen and a few seconds later, a progress bar and the computer behaved as if it had rebooted with the "Reopen windows" option ticked. I ignored it thinking it was a singular incident but today, it happened again when the MBA woke after 6 hours of sleep. I did a little research and followed the steps given in this thread Mac Pro does not wake up after sleep

Step 1

Take all the applicable steps in this support article. That's the starting point for any further efforts to solve the problem.

Step 2

If you're running OS X 10.8.5 or earlier, from the menu bar select

 ▹ System Preferences... ▹ Accessibility

If the checkbox at the bottom marked

Enable access for assistive devices

is checked, uncheck it and test.

If you're running OS X 10.9 or later, select

 ▹ System Preferences... ▹ Security & Privacy ▹ Privacy ▹ Accessibility

If any applications are listed on the right and have a checked box next to them, uncheck all the boxes and test. You may first have to click the padlock icon in the lower left corner of the window and authenticate as an administrator to unlock the settings.

Step 3

Disconnect all wired peripherals except those needed to boot, if any. Be sure to disconnect all USB hubs. If you use a keyboard or mouse plugged into a hub, plug the devices directly into a built-in USB port and remove the hub. Test.

Step 4

If you have more than one user account, you must be logged in as an administrator for this step.

Launch the Console application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Console in the icon grid.

In the Console window, look under the heading DIAGNOSTIC AND USAGE INFORMATION on the left for Diagnostic and Usage Messages. If you don't see that heading, select

View ▹ Show Log List

from the menu bar. In the search box in the window's toolbar, enter "powerd" (without the quotes.) Select the last few messages that appear, if any, and copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).

Here are the logs that I copied thus

23/06/15 1:20:10.623 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: LowBattery

com.apple.message.signature2: unsupported

com.apple.message.signature3: LowBattery

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 1:21:09.169 am powerd[48]: com.apple.message.domain: com.apple.sleep.failure

com.apple.message.signature: Platform Failure

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 1:46:53.702 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: User

com.apple.message.signature2: unsupported

com.apple.message.signature3: User

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 5:37:08.699 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: Lid Open

com.apple.message.signature2: unsupported

com.apple.message.signature3: Lid Open

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 5:47:38.677 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: User

com.apple.message.signature2: unsupported

com.apple.message.signature3: User

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 6:22:22.118 am powerd[48]: com.apple.message.domain: com.apple.darkwake.capable

com.apple.message.hardware_support: smc_without_platform

com.apple.message.settings: ac

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 6:40:40.679 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: User

com.apple.message.signature2: unsupported

com.apple.message.signature3: User

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 7:25:22.668 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: User

com.apple.message.signature2: unsupported

com.apple.message.signature3: User

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 8:21:29.665 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: User

com.apple.message.signature2: unsupported

com.apple.message.signature3: User

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 11:26:44.580 am powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: SleepTimer

com.apple.message.signature2: unsupported

com.apple.message.signature3: SleepTimer

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 1:56:01.805 pm powerd[48]: com.apple.message.domain: com.apple.sleep.failure

com.apple.message.signature: Platform Failure

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 2:04:23.410 pm powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: HID Activity

com.apple.message.signature2: unsupported

com.apple.message.signature3: HID Activity

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 2:05:57.015 pm powerd[48]: getgrouplist called triggering group enumeration

OSActivityID: 0x000000a400000003

com.apple.message.value: 17

com.apple.message.domain: com.apple.system.libinfo

com.apple.message.result: noop

com.apple.message.signature: getgrouplist

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

23/06/15 2:34:07.682 pm powerd[48]: com.apple.message.domain: com.apple.iokit.wakereasons

com.apple.message.signature: Lid Open

com.apple.message.signature2: unsupported

com.apple.message.signature3: Lid Open

com.apple.message.summarize: YES

SenderMachUUID: 3533AF53-906D-38D6-B29A-DDDEB6FD91CD

The guy in the tread said com.apple.message.signature: Platform Failure is a sign that its an internal hardware fault. That has gotten me really worried as I am from India and unsure of how good/bad/costly Apple support is here. Also, I'm out of warranty so thats no help here. Any guidance or help?