My computer:

Thermaltake 430W PSU
Chaintech 7NIF2
Athlon XP 2400
2 x 256 pc2100
80GB Western Digital
ATI Radeon 9800 Pro

Situation:

I just replaced the chipset cooler with a Zalman NB47J and when I assembled the computer back together, I just got a 4 second beep that repeats and the monitor was blank. No BIOS screen or anything.

Heres what Ive tried so far:

*I thought it was because of a misconfiguration of the front panel connectors, so I looked up the manual and put the cables as they should be. I tried various configurations with no luck.

*I tried clearing the CMOS and also taking out the battery.

*I disconnected/removed any cards or disks, just leaving the motherboard, fans, and memory.

*I tried booting with each ram stick individually and also put them in opposite slots.

*I connected the monitor to the integrated graphics instead of my ATI card.

My dad thinks its possibly fault of the Zalman heatsink. Should I try putting back the previous cooler?

Any other suggestions?

P.S. I dont think the PSU is at fault. Its fairly new and should provide enough power.

if it happened just after you changed the cooler, yes, change it back, see if its ok

BEFORE you do, make sure your cooler is seated right.

did you use thermal paste?

The new heatsink is firmly attached and yes I used the thermal paste that came with the heatsink.

check all componets are seated right, reseat them firmly, like memory, graphics.

did u try the old cooler?

Ive reseated the components several times and I did try the old cooler with no change in behavior