I'm at a loss here and have been troubleshooting for over a week. I'm hoping some folks on this forum can help me out.
I have an older system (DX5150 micro tower) that will sporadically shut down at the point when the OS starts to boot -- currently I have XP, but this happened with a bunch of Linux distros that I tested to. I've lost count of how many clean installs I've done and am at my wits end with this problem. It's like somebody cuts the power from the system -- no beeps or red lights or anything. I can't even turn the system back on until I unplug the PSU cable for 5 minutes or so then plug in again.
My first response was to strip out extra hardware and peripherals to see if I could isolate the problem. I removed all but one memory stick, removed my Geforce video card (using onboard ATI now), unplugged all but the necessary keyboard/mouse peripherals. I tried to reinstall Linux Mint a few times but noticed that my system would power down no matter what (boot DVD or USB stick).
I decided to backpedal and give Windows XP reinstallation a go. To my delight, the install worked perfectly from a boot DVD, and for a day or so I was happily up and running with an OS again (even if it's a dead one). I shut down my system after some testing/updates. Later in the day, I booted it up again; the system shut down during OS boot again.
I've tried everything I can think of, short of replacing the PSU (Antec 500W -- only 3 years old) or motherboard. I will say I can boot into Safe Mode (with or without networking), so I'm starting to think that it's something to do with software or drivers -- but again, I have a clean install and made sure to install the newest drivers.
I've checked cables, swapped cables, reapplied thermal paste on the CPU, reseat the CPU fan, blew dust out of the tower, to no avail. I even tried to downgrade the BIOS firmware by a version. I can still use the system now (safe mode), but I'm wary about whether the issue is resolved.
Sorry for the long post. I'm rambling, but wanted to provide some detail and context. If any of this sounds familiar or it's obvious that I'm missing something in my troubleshooting, please let me know. I really hope I've just been overthinking this and there's an obvious oversight on my part, but the realistic part of me is thinking my system is probably on the way out.
Any help is appreciated, and let me know if I can provide more specific specs or details about what I've tried so far.
Thanks in advance!!
Edited by hamluis, 02 September 2014 - 05:14 PM.
Moved from XP to Internal Hardware - Hamluis.