Ok, here's the story: recently, my neighbours PC has been having a lot of problems with crashing and not starting properly and eventually it came to the PC not starting at all, so it was figured the PSU had failed, which turned out to be correct. With the PSU replaced (some 550watt no name - better than the 400watt no name that had been Ok for a year though) there are still some issues. On first booting up, it booted fine, but showed up as a Duron 850Mhz instead of a Sempron 2800+. My mate said it's Ok usually as even though it's named wrong, we could easily set it at correct levels in the BIOS. This we tried, but it hasn't worked. Firstly, the Multiplier was showing as changable upto 13x, but after each Save of settings in the BIOS, the system would not boot, which required a BIOS reset. Eventually we just tried changing the FSB to it's correct level (166Mhz), which got it upto 1416Mhz, which for me neighbour, would still be fast enough. But the problem is it still didn't work - it would sometimes crash after 10 minutes and others times it would last over 5-6 hours with no problem and shut down Ok. The otehr problem is that on a 'cold boot' the system freezes just after the Windows XP logo dissappears, whereas on a reset, it boots fine, and after shutting down completely and restarting after a couple of minutes, it boots fine. My mates not keen on doing a BIOS update,but anyway, I'm suspecting it's more than that. I've tried lowering CPU clock to 1133Mhz, and memory to 133Mhz (from 166Mhz) and it still has the same problems, so I'm wondering whether either the motherboard, the CPU or the memory have been damaged by the old PSU failure? Another point I will add is that it crashed when my neighbour was attaching a file to an email while on the internet, so could it be a memory/HDD problem?
Anyone got any idea's? Ta if you do!!!!
I'll just add the component details:
Sempron 2800+ Socket A
MSI K7N2 Delta 2 LSR (Nforce 2)
512MB DDR RAM (333Mhz effective)
120GB Maxtor HDD IDE 133 (8mb cache).
FX 5200 128MB
Hauppage TV Card
Hardware 56Kb Modem
550Watt PSU (no idea of rail specs, but it should work anyway).
I think that's all of it