Sabertooth P67 boot device LED lights up after changing case

funstuffofdoom

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Jan 28, 2015
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4,510
Hello, folks. I'm pretty inexperienced computers and the stuff that goes inside them, and I'm concerned I've screwed myself over in a potentially expensive way.

I'm running an Intel i5 core duo CPU, an ASUS Sabertooth p67 motherboard, an MSI GTX 970 graphics card, 8 GB of ram, and two internal hard drives: the primary is 500 GB, and a secondary storage drive with 1 TB. I have a FirePower ZT series 750 W PSU.

Yesterday morning, everything seemed to be working just fine. Yesterday evening, I changed cases from a Rosewill Challenger case to a Rosewill Thor case, and now my computer won't boot, or even get through the POST phase. It lights up the boot device LED and hangs tight. Nothing displays on my monitor throughout any of this.

I'm confident the power cords I have are correctly plugged in, and I've tried swapping out both connections from the hard drives to the PSU, and SATA connections to the motherboard. I've also tried rotating SATA ports on the motherboard to see if location's important, though I haven't tested every possible combination of slots. I've tried the hard drives together, separately, and I tried booting with only an external hard drive plugged in, once. Nada.

The Thor case has a few more fans than the Challenger did. Is it possible I've strayed over-power, and, if so, how would I test that? Is there anything else I can test to determine whether or not I've missed something small and simple, or did I inadvertently fry something? If I fried something, how do I go about figuring which thing it is I fried?
 

funstuffofdoom

Reputable
Jan 28, 2015
2
0
4,510
I went through the link and installed the standoffs. I also checked and double-checked my RAM and graphics card installations. Now, though, when I try to boot, it throws a DRAM light, instead. It boots, runs for a moment with the DRAM light on, shuts down, and then starts back up and stays up, but with the DRAM light on. Still nothing on the monitor. the MemOK button had no discernible effect.

Edit: I've tried a single stick of RAM in each of the four possible slots. Same result as above for each. I'm confident but not 100% that the RAM is good.