Motherboard - 915g combo ms-7058 ver 1
hdd - 80gb western digital
ram x2 512mb - ddr1
cpu 2.8 ghz p4 prescott
gpu - xfx hd 4550 / sapphire hd 5450
psu - 550w xfx pro
cooler - coolmaster hyper tx3
I have a problem, after taking out my hd 4550 xfx and installing a hd5450 the pc won't boot.
when i press the power button i hear the psu and fans turn on for a split second and dyes.
and turns on again and dyes again, this repeats forever. no beeping noise.
If i take out the hd5450 and install back my original card hd4550 it boots fine everything works.
It isn't the psu as i ran it through a power tester.
Gave a friend my card to install into his pc and it works not a defective card.
ran every test i can tried a different psu 350w same results.
tests done are psu 550w & 350w just hd5450 , cooler , cpu, hdd. - both same tries to power it. dyes and restarts.
psu 550w & 350w - hd4550 , cooler, cpu , hdd - both boot normally. also cleared cmos same result
Its either motherboard doesn't support the hd5450 or motherboard short circuiting somewhere trying to draw enough power for hd5450. only thing i can think of.