Macbook keeps falling asleep

Every time i turn on my mac, it keeps falling asleep. I press a button and it wakes up, and then for a second or two its up then falls asleep again.

Same problem with a teacher's computer I work with. Tried the SMC reset and it didn't work. Tried PRAM reset and it didn't work. So I took the power adapter out (the battery was fully charged), and it started working fine without the adapter. I used the computer for a few minutes and put the adapter back in. The fan might have gotten faster, but I am not sure if that was normal now. Anyway, it is working for the time being, but tomorrow is another day.
Because I work with a lot of Macs, I have seen the sensor replaced a couple of times because of this. [Crossing fingers.]

Similar Messages

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    disk space
    amount of RAM
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    1/28/13 3:19:54 PM CST   Assertions         
    PID 440(ubd) Created ApplePushServiceTask "com.apple.ubiquity.push" 00:00:07  id:0xc00000b1c Aggregate:0x1040
    1/28/13 3:19:59 PM CST   Assertions         
    PID 440(ubd) Released ApplePushServiceTask "com.apple.ubiquity.push" 00:00:11  id:0xc00000b1c Aggregate:0x1040
    1/28/13 3:37:50 PM CST   Assertions         
    Summary- Aggregate:0x40 Using AC                                         
    1/28/13 3:38:26 PM CST   Assertions         
    PID 218(helpd) Created BackgroundTask "com.apple.helpd.sdmbuilding" 00:00:08  id:0xc0000013c Aggregate:0x1040
    1/28/13 3:38:30 PM CST   Assertions         
    PID 33(mds) Created BackgroundTask "com.apple.metadata.mds" 00:00:08  id:0xc00000162 Aggregate:0x1040
    1/28/13 3:39:30 PM CST   Assertions         
    PID 33(mds) Released BackgroundTask "com.apple.metadata.mds" 00:01:08  id:0xc00000162 Aggregate:0x1040
    1/28/13 3:41:07 PM CST   Assertions         
    PID 218(helpd) Released BackgroundTask "com.apple.helpd.sdmbuilding" 00:02:49  id:0xc0000013c Aggregate:0x40
    1/28/13 3:47:00 PM CST   Assertions         
    PID 33(mds) Created BackgroundTask "com.apple.metadata.mds" 00:00:05  id:0xc00000176 Aggregate:0x1040
    1/28/13 3:47:00 PM CST   Assertions         
    PID 333(helpd) Created BackgroundTask "com.apple.helpd.sdmbuilding" 00:00:05  id:0xc0000017b Aggregate:0x1040
    1/28/13 4:13:48 PM CST   Assertions         
    PID 578(AddressBookSour) Created PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:07  id:0x1000002d9 Aggregate:0x1042
    1/28/13 4:14:11 PM CST   Assertions         
    PID 578(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:31  id:0x1000002d9 Aggregate:0x1040
    1/28/13 4:34:54 PM CST   Assertions         
    PID 33(mds) Released BackgroundTask "com.apple.metadata.mds" 00:47:59  id:0xc00000176 Aggregate:0x1040
    1/28/13 4:47:00 PM CST   Assertions         
    PID 744(AddressBookSour) Created PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:04  id:0x1000003e3 Aggregate:0x1042
    1/28/13 4:47:26 PM CST   Assertions         
    PID 744(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:31  id:0x1000003e3 Aggregate:0x1040
    1/28/13 4:54:49 PM CST   Assertions         
    PID 518(ubd) Created ApplePushServiceTask "com.apple.ubiquity.push" 00:00:07  id:0xc00000428 Aggregate:0x1040
    1/28/13 4:54:52 PM CST   Assertions         
    PID 518(ubd) Released ApplePushServiceTask "com.apple.ubiquity.push" 00:00:10  id:0xc00000428 Aggregate:0x1040
    1/28/13 4:57:31 PM CST   Assertions         
    PID 518(ubd) Created ApplePushServiceTask "com.apple.ubiquity.push" 00:00:07  id:0xc00000446 Aggregate:0x1040
    1/28/13 4:57:34 PM CST   Assertions         
    PID 518(ubd) Released ApplePushServiceTask "com.apple.ubiquity.push" 00:00:10  id:0xc00000446 Aggregate:0x1040
    1/28/13 5:01:43 PM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:07  id:0xc00000460 Aggregate:0x1042
    1/28/13 5:01:43 PM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:07  id:0xc00000461 Aggregate:0x1042
    1/28/13 5:01:43 PM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:07  id:0xc00000462 Aggregate:0x1042
    1/28/13 5:01:46 PM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:10  id:0xc00000460 Aggregate:0x1040
    1/28/13 5:01:46 PM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:09  id:0xc00000461 Aggregate:0x1040
    1/28/13 5:01:46 PM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:09  id:0xc00000462 Aggregate:0x1040
    1/28/13 5:01:46 PM CST   Assertions         
    Summary- Aggregate:0x1040 Using AC                                       
    1/28/13 5:34:11 PM CST   Assertions         
    PID 518(ubd) Created ApplePushServiceTask "com.apple.ubiquity.push" 00:00:08  id:0xc000004fa Aggregate:0x1040
    1/28/13 5:34:13 PM CST   Assertions         
    PID 518(ubd) Released ApplePushServiceTask "com.apple.ubiquity.push" 00:00:09  id:0xc000004fa Aggregate:0x1040
    1/28/13 5:42:22 PM CST   Assertions         
    PID 518(ubd) Created ApplePushServiceTask "com.apple.ubiquity.push" 00:00:07  id:0xc0000052e Aggregate:0x1040
    1/28/13 5:42:23 PM CST   Assertions         
    PID 518(ubd) Released ApplePushServiceTask "com.apple.ubiquity.push" 00:00:08  id:0xc0000052e Aggregate:0x1040
    1/28/13 5:43:11 PM CST   Assertions         
    PID 33(mds) Created BackgroundTask "com.apple.metadata.mds" 00:00:07  id:0xc00000533 Aggregate:0x1040
    1/28/13 5:43:11 PM CST   Assertions         
    PID 33(mds) Released BackgroundTask "com.apple.metadata.mds" 00:00:07  id:0xc00000533 Aggregate:0x1040
    1/28/13 5:47:02 PM CST   Assertions         
    PID 985(AddressBookSour) Created PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:07  id:0x10000055f Aggregate:0x1042
    1/28/13 5:47:24 PM CST   Assertions         
    PID 985(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:30  id:0x10000055f Aggregate:0x1040
    1/29/13 8:25:49 AM CST   Assertions         
    Summary- Aggregate:0x40 Using AC                                         
    1/29/13 8:26:23 AM CST   Assertions         
    PID 218(helpd) Created BackgroundTask "com.apple.helpd.sdmbuilding" 00:00:14  id:0xc00000139 Aggregate:0x1040
    1/29/13 8:26:23 AM CST   Assertions         
    PID 33(mds) Created BackgroundTask "com.apple.metadata.mds" 00:00:13  id:0xc0000013a Aggregate:0x1040
    1/29/13 8:26:33 AM CST   Assertions         
    PID 218(helpd) Released BackgroundTask "com.apple.helpd.sdmbuilding" 00:00:24  id:0xc00000139 Aggregate:0x1040
    1/29/13 8:26:42 AM CST   Assertions         
    PID 306(helpd) Created BackgroundTask "com.apple.helpd.sdmbuilding" 00:00:05  id:0xc0000016a Aggregate:0x1040
    1/29/13 8:27:10 AM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:06  id:0xc000001ac Aggregate:0x1040
    1/29/13 8:27:10 AM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:06  id:0xc000001ad Aggregate:0x1040
    1/29/13 8:27:10 AM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:06  id:0xc000001ae Aggregate:0x1040
    1/29/13 8:27:10 AM CST   Assertions         
    PID 56(apsd) Created ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:06  id:0xc000001af Aggregate:0x1040
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    PID 297(PhotoStreamAgen) Created ApplePushServiceTask "Photo Stream" 00:00:04  id:0xc000001c3 Aggregate:0x1040
    1/29/13 8:27:13 AM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:10  id:0xc000001ac Aggregate:0x1040
    1/29/13 8:27:13 AM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:09  id:0xc000001ad Aggregate:0x1040
    1/29/13 8:27:13 AM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:09  id:0xc000001ae Aggregate:0x1040
    1/29/13 8:27:13 AM CST   Assertions         
    PID 56(apsd) TimedOut ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:09  id:0xc000001af Aggregate:0x1040
    1/29/13 8:27:13 AM CST   Assertions         
    Summary- Aggregate:0x1040 Using AC                                       
    1/29/13 8:27:18 AM CST   Assertions         
    PID 56(apsd) Released ApplePushServiceTask "com.apple.apsd-queue-port=com.apple.syncdefaultsd.push-user=501-env=production " 00:00:14  id:0xc000001af Aggregate:0x1040
    1/29/13 8:27:20 AM CST   Assertions         
    PID 297(PhotoStreamAgen) Released ApplePushServiceTask "Photo Stream" 00:00:15  id:0xc000001c3 Aggregate:0x1040

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