Macbook works very slow and consumes a lot of battery power when closed

Question

Hi@all
I hope someone of you can help me. My Mac crashed yesterday. I got a warning saying "there was a problem, your Mac will reboot" (I didn't get the exact words because it vanished quite fast and the MacBook rebooted itself). Since then my Mac is working very slow and freezes every few minutes. I looked at the CPU usage but this is always under 25% so there shouldn't be a programm that causes this problem.
In addition:
When I close it, it seems to go to sleep mode normally but is still consuming quite high amounts of battery power and get's warm. When I work with it the temperature stays normal.
I have a MacBook Pro (mid 2012) with 2.5 GHz Intel Core i5 running with Mavericks.
It would be great if someone has an idea what could cause this kind of problems.
Thanks a lot in advance for your suggestions :-)

Answer 1

sternblume,
for the high energy consumption in sleep mode, you could try resetting its System Management Controller.
For the slow working and freezing, you can try this: boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the Mac OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode.