Any hardware that you installed, such as additional memory, a peripheral, etc.
MID 2009 MACBOOK PRO CHARGER FOR SALE LOCALLY SOFTWARE
Any new software that you recently installed, especially software that added items to the System folder.
MID 2009 MACBOOK PRO CHARGER FOR SALE LOCALLY MAC OS
Sometimes problems that occur with a specific application, but not with the others might indicate that this specific application is not compatible with the version of the Mac OS installed on your computer.
The applications which where running when the problem occurred.
Keep in mind that making a note of things you did before the problem occurred will help you narrow down possible causes and find the answers you need. Think about the conditions that led up to the problem. Troubleshooting with MacBook 5.1: Occasionally you may have problems while working with your computer, but if you experience a problem with your MacBook, there is usually a simple and quick solution.
Memory: 2GB (two 1GB), expandable to 8GB (4GB supported by Apple).
MacBook 5.2 (Early 2009): Introduced on January 21, 2009.
MacBook 5,1 (Late 2008 Aluminum): Announced on October 14, 2008.
It was replaced in October 2009 by the unibody polycarbonate model. This MacBook model was shipped in a single configuration, with 2 GB of RAM. The hard disk capacity was increased to 160 GB. The processor speed was increased by 6.5% to 2.13 GHz. Introduced in May 2009, the MacBook 5,2 (13-inch, Mid 2009) was a modest speed-bump of the previous MacBook. This MacBook model was shipped in a single configuration, and was replaced in June 2009 with a new model. The graphics chipset received a significant upgrade. The processor ran at a slightly slower clock-rate. Introduced on January 21, 2009, the MacBook 5,2 (13-inch) was a feature-bump of the existing low-end white MacBook model.
7.2 MacBook (13-inch, 2.0GHz Intel Core 2 Duo, Early 2009).