Computer freezes randomly
Posted on 2012-08-18
I'm hoping an experienced technician can provide me with some input to a problem a PC is experiencing.
The system is around 6 years old & is an xp SP3 system that consists of a 500gb drive, 2 gb RAM (2x1gb DDR400), GA-85661fxm-775 main board, Intel Pentium 4 CPU.
Daily it will work ok for a while & then become unresponsive. Mouse, keyboard disappear (both usb & PS2) & the only way to bring it back is to force a restart. I can't be sure, but it seems to happen more frequently after being left idle for a while.
To date i have taken a backup image of the drive, scanned with malwarebytes, scanned with Spybot, scanned with Kaspersky online virus scanner, scanned for rootkits using Kaspersky scanner. Nothing has been detected. I've also cleaned up some of the junk detected by Glary utilities. Device manager shows no 'unknown' components & i can't see any errors in the event logs. The system is up to date with MS Updates.
I've tested the memory using memtest overnight with results showing as passed.
I've tested the Hard Drive using ultimate boot cd & a seagate tool & this also showed no errors.
I've removed all PCI Cards - same problem
I've taken the ram out leaving 1gb in single DIMM slots - same problem occurs.
CPU temp hovers around the 45-50 degree Celsius range when i look at it in the bios.
This leaves me with possible problem being PSU, CPU or motherboard where my level of expertise in troubleshooting is limited. Are there ways to test any of these components without physically replacing them?
I'm at the stage where it may be better to replace the system with a new one if the costs to repair & troubleshoot are likely to be similar.
If anyone could offer any advice i'd really appreciate it :)