We normally spend lot of money for technicians to identify the issue with the computer and then realize it was due to RAM which was causing all the problem.
This article will hep you to diagnose the issue free using Windows Memory Diagnostic.
Common symptoms of bad ram
There are many indicators of bad memory, but the most common ones are:
Computer not booting at all, beeping endlessly. When this happens all you can do is replace the RAM by trying another stick. You wont be able to use any ram diagnostic software in this instance.
Distorted graphics on the screen. However it is possible this can be video card related.
Blue screens of death during the installation of Windows XP or Windows 2000. This is an obvious sign of faulty RAM.
Crashes or blue screens during normal operation of the system (emails, web surfing etc.)
Crashes during memory intensive tasks such as using Photoshop, playing 3d games etc..
The Windows Memory Diagnostic tests the Random Access Memory (RAM) on your computer for errors. The diagnostic includes a comprehensive set of memory tests. If you are experiencing problems while running Windows, you can use the diagnostic to determine whether the problems are caused by failing hardware, such as RAM or the memory system of your motherboard. Windows Memory Diagnostic is designed to be easy and fast. On most configurations, you can download the diagnostic, read the documentation, run the test and complete the first test pass in less than 30 minutes.
Please check Microsoft website about the tool.
Windows Memory Diagnostic