Asrock P4i65G Motherboard

If the CPU is dead the problems can be

1. no power
2. no fans etc or
3. power, no beeps (errors)

If the Ram is not compatible it would be constant beeping.

With the board in, and power supply 20pin + 4pin Pent 4 power attached,(#2 and #7 of motherboard layout) remove power cord from power supply.
CLRCMOS0 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS0 for 5 seconds. Remove the jumper. Remove heatsink and fan from CPU. disconnect cpu and reseat it. Re-install heatsink and fan. Plug in the power cord. Try to boot up. If it still does not boot and (no power, no fans etc.) problem would then be cpu is fried.

I have a similar problem, i have an asrock p4i65g and just bought an ocz 700 w psu, when i press the power button all of the lights in my pc flicker, and the fans spin but no screen, no beeps, i have tried the psu in another system and a different psu in the system im running, so the cpu is fine, and the psu is fine but together they wont work ???:S??? any help would be greatly appreciated...