Broken MPB

[aggeren]

Hi errrybody

Posted a thread a while ago about my MPB acting weird. The thing is that my computer suddenly restarts without any warning. This may happen a few times a day and in no particular pattern. When i use my computer its mostly on the desk or a table (unless i watch movies) so no overheat and i use programs like word, illustrator, internet and photoshop, nothing that requiers too much. I've tried:
- Permissions repair
- Resetting SMC and PRAM
- Sending my MPB to a hardware check (didn't find anything)

And most importent of all, my computer is very very slow after i installed OS X Lion.. And all these problem started after i downloaded Lion

Hope you understand my problem (not very good at english)

- aggeren

 

[Ccrew]

Restarts as in kernel panics, or just power off/back on kind of restart?

 

[aggeren]

Restarts as in kernel panics, or just power off/back on kind of restart?

Both

Sometimes kernel and sometimes the screen freezes and then a grey screen appear for approximately10-15 second, next an apple logo appear for a few seconds too and then i can see my desktop and all programs restarts.

 

[aggeren]

Okay..

I would really appreciate if just someone with a little bit of knowledge would tell me what to do because it's getting really annoying. The restarts occurs every hour or so and my computer is still slow. My computer is approximately 1 year old and dont think this is normal for an 1 year old MPB.

Please, help

 

[heisenberg123]

have you tested your RAM?

http://osxdaily.com/2011/05/03/memtest-mac-ram-test/

 

[iLog.Genius]

Go back Snow Leopard and see what happens.

 

[aggeren]

May be a stupid question.. But how do i change back to leopard??

 

[Ccrew]

iisforiphone is correct in where to start, frequent KP's are more often than not a bad DIMM. File permissions can do it, as can some errant USB devices.

Copies of the panic logs would be of value also.

http://developer.apple.com/library/mac/#technotes/tn2063/_index.html