We just got a 7010 MT and it looks in great condition. We put in parts that came from a working PC (dell 7010 SFF) and the pc will power on very briefly (2-3 secs the CPU, PSU and case fans spin up) with the power light LED amber for a few seconds. Then everything powers off. I tested the PSU and it's fine plus I tried a brand new PSU and it did the same thing. I get nothing displayed on the monitor, no BIOS beeps or anything at all.
Ok so BIOS reset didn't seem to do anything but removing the CMOS battery for 30 mins and I had some more progress. It now turns on and stays one and I get the 2-3 lights on the power button. The manual says "system board, cpu or memory failure" so I'm going to swap those out with others that are working and report back.
You might try installing a fresh battery while you're at it, especially if this system sat unused for a while.
Forum Member since 2004
I am not a Dell employee