Asus p6tse started working properly until I pressed the flash button 2 times.
Asus p6tse started working properly until I pressed the flash button 2 times.
Hey, I see the issue. Your motherboard is showing up but the power isn't getting through. The CPU is an Xeon X5550, and you've got two RAM sticks that work fine in another setup. The PSU and HDD are functioning properly, so the problem might be with the power delivery or a faulty component. You mentioned trying a DDR2 VGA card and everything else seems to work, which suggests the main bottleneck is likely the power supply or a faulty RAM slot.
Additionally, I own a P6T but it's the deluxe version. I've done a crossflash to P6X58D Premium with a CH341A for improved overclocking (which I highly suggest on all ASUS boards). If you ever need to update the BIOS, ASUS has a socketed BIOS option (possibly hidden by a warranty sticker), so you won't risk damaging it. Crossflashing is straightforward thanks to the socketed chip, which is why my X58 board is quite unreliable and sensitive to RAM changes. It tops out around 2200MHz on average xeon chips, and it gets even worse with a NEHALEM instead of a WESTMERE like my X5660. I also face slot issues, especially with Slot 2, which often fails at high speeds. Even with stock chips, my TRANSITION RAMs with PSC X series chips are problematic. If you're on a budget, consider trading in for a better board like the GigaUD series or P6X58/Sabertooth. Alternatively, look for affordable used B350/450 or X370/470 boards and 1st-3rd gen Ryzen units—they’ll outperform the X58 while using less power. These used models are usually expensive, so you might get a good return by selling them.