Frozen macbook

[jr.macintosh]

Hello,

I recently bought a macbook early 2006 (2Ghz intel core duo)
for a cheap price, and i want to sell it to make a little profit.
However the macbook freezes randomly, their is no response from the mouse or keyboard.
So i need to force shut down the machine, otherwise it won't start up.
it happens completly random, somtimes right after start-up, sometimes after 2 hours of using the machine.
I upgraded the ram to 2gb en did a new fresh install of snow leopard.
I already did a reset of the PRAM and NVRAM.
Does anyone can help me to fix this?
The battery is also marked as 'replace soon' but i don't think it has something to do with that...

Help would be really appreciated

 

[simsaladimbamba]

Open Activity Monitor and select All Processes and then sort by CPU to show you the process(es) slowing down your Mac and also go to the System Memory* tab and look for Page Outs and Swap used and report back.

Using Activity Monitor to show you CPU and RAM usage​

* Mac OS X: Reading system memory usage in Activity Monitor​

Performance Tips For Mac OS X

 

[Intell]

The hard drive could be failing. Even a cheap new hard drive will give it a nice speed boost over the stock hard drive.

 

[jr.macintosh]

Open Activity Monitor and select All Processes and then sort by CPU to show you the process(es) slowing down your Mac and also go to the System Memory* tab and look for Page Outs and Swap used and report back.

Using Activity Monitor to show you CPU and RAM usage​

* Mac OS X: Reading system memory usage in Activity Monitor​

Performance Tips For Mac OS X

it's probably not about performance troubles, it even freezes right after start-up with no programs running at all

 

[simsaladimbamba]

it's probably not about performance troubles, it even freezes right after start-up with no programs running at all

You can use the following applications to benchmark the speed of your HDD, to see, if the HDD is the culprit:

• AJA System Test
• Blackmagic Disk Speed Test
• Xbench