The P4 noted is from the right time frame so look for bad caps.
Pictures at http://www.google.com/search?hl=en&q=BAD+CAPS&btnG=Google+Search
everything was working except for the fact that my computer was intermittently overheating and shutting down. So i decided to clean all the dust and what not out of it. However after doing so it refuses to boot up, it starts for about 5 seconds and then shuts down again. I dont know whether this is because of a mistake on my part as i have cleaned it many times before.
Any help would be much appreciated.
My hardware specs are as follows:
-Intel Pentium D 3.0Ghz
-250gb maxtor HD
(cant think of any other parts that could b relevant but if required please let me know)