I have an old Compaq Presario with a 2.6ghz Celeron PROCESSOR, 768MB RAM running Windows XP SP2. Just recently the computer starts up and shuts down randomly. Sometimes the machine will start up (lights and all) for about less than 5 seconds and then powers down. Sometimes it will go all the way to the boot screen and then all of a sudden power off. Sometimes it will enter Windows and then will immediately go through a normal shut down. After this it will tend to start up again, and shut down at different times by itself in a cycle. The power button really doesn't have much of an effect, sometimes it will do something, sometimes it won't. I'm unable to do much of anything with it like this.

UPDATE: I just changed the CMOS battery and reseated the RAM, the computer at least now boots up correctly into Windows. However, given a long period of time, it still sometimes will normally shut down without notice and restart. I don't know the cause of this issue? Is it some virus or spyware? (I'm going to run some scans to check.) Any ideas?

All help is appreciated.Download, unzip, and run (no installation needed)BLACKBOX: http://www.freewarefiles.com/BlackBox_program_45414.html
Post computer temperatures, along with processor model:
Hope that UR com not infected by virus userinit.exe
If not, maybe a failure of DUMPING physical memory. U follow these steps:
1. On ur keyboard, press simultaneously 2 keys: Windows+pause\break
2. Follow:

Hope this help Quote from: Broni on November 10, 2008, 11:40:11 PM

Download, unzip, and run (no installation needed)BlackBox: http://www.freewarefiles.com/BlackBox_program_45414.html
Post computer temperatures, along with processor model: