[Slacker190]

I have a new AMD 4000+X2 and the Biostar TF520-A2 rev5.0 motherboard. After installing all the parts, upon power on, it just spins up the fans and drives, no video or anything. The onboard status/error LED's indicate an "abnormal" error, which involves the cpu/chipset according to the manual. All the parts are installed correctly. I tested everything besides the motherboard and cpu in another system, and all works 100%

Clearing CMOS doesn't help. The manual says to reseat the cpu/memory. I reseated both several times, but to no luck. Many different kinds of DDR2 memory tested on board, none of
which work.

Thanks in advance.

 

[vote4tux]

I have the same problem with my Biostar TF520-A2. Did you solve your problem?

I ordered a new Motherboard, because I tested many different kinds of DDR2 memory too which don't work.

Thanks

 

[2pistolpacker]

I was having a similar issue on a new build, mine turned out to be the memory was undervolted. It needed 2.1v and the default was 1.9v, after I upped the voltage everything smoothed out. I was about to buy an Asus mobo but luckily I was reading some reviews and their complaint was the limited voltage settings in the bios, which the highest setting would not have been enough for my Corsair to run. Just a thought. Mike

 

[vote4tux]

OK... I solved the problem after calling Biostar support. There is a 8pin connector on the Mainboard called JATXPWR2. This connector has to be connected with the PSU.
Even if you don't have a 8pin connector on your PSU, just take the 4pin connector from your PSU and connect it to the 8pin slot called JATXPWR2. Then everything should run.

 

[Slacker190]

It turns out the motherboard was DOA. Received new board in about 2 weeks from the egg, powered up perfectly.

The memory i wanted to use in the system was 2.1V, so it didnt work with that memory at first, exactly what I expected to happen. Popped in the bargain-bin 1.8v ram, upped the voltage, worked perfect.

Thats just common sense that you need the ATX4/8pin power connector. The cpu doesn't get any power without that connected. The 4 pin "video" power connection though, I'm not so sure about. I've got a 7300LE installed, and the system works the same whether the 4 pin molex is connected or not.