I have a packard bell Imedia 4145 about 18 months old.
It shuts down soon after I switch it on. It will get as far as starting to load windows then shut off. Each time I turn it on it runs for a shorter period - after 2 or 3 attempts it won't even load the bios.
If I leave it overnight and then switch it on, it will load the bios and start to load windows again.
I suspect the problem is a temperature sensor somewhere giving a false reading - it never stays on for more than a minute. In that time I doubt that it would really get hot enough to
It gives a POST beep ok, and I have tried the following cleaning out the case and mobo switching memory cards around and running with just one disconnecting HDD and DVD drive disconnecting video card checked the fans and heatsink bonding to processor - all seem ok. put the HDD in an external case and checked it on another computer - seems to be fine
Next steps I am contemplating getting another power supply unit - maybe the one I have is malfunctioning getting another mobo - don't think I would be able to replace a defective temp sensor Any suggestions ? - thanks in advance